Publications (130)
Pre-emptive parametric kill switch for evaporative atomic sources in vacuum
Shuang Li, Zhiyuan Lin, Sen Li +7
A robust pre-emptive kill switch for cold atom experiments is introduced to significantly reduce costly system reassembly or replacement. The design incorporates upper (alarm) and…
Error suppression in adiabatic quantum computing with qubit ensembles
Naeimeh Mohseni, Marek Narozniak, Alexey N. Pyrkov +3
Incorporating protection against quantum errors into adiabatic quantum computing (AQC) is an important task due to the inevitable presence of decoherence. Here we investigate an er…
Macroscopic quantum computation using Bose-Einstein condensates
Tim Byrnes, Kai Wen, Yoshihisa Yamamoto
Quantum computation using qubits made of two component Bose-Einstein condensates (BECs) is analysed. The use of BECs allows for an increase of energy scales via bosonic enhancement…
The Quantum Internet (Technical Version)
Peter P. Rohde, Zixin Huang, Yingkai Ouyang +14
Following the emergence of quantum computing, the subsequent quantum revolution will be that of interconnecting individual quantum computers at global level. In the same way that c…
A BCS wavefunction approach to the BEC-BCS crossover of exciton-polariton condensates
Tim Byrnes, Tomoyuki Horikiri, Natsuko Ishida +1
The crossover between low and high density regimes of exciton-polariton condensates is examined using a BCS wavefunction approach. Our approach is an extension of the BEC-BCS cross…
Majorana braiding gates for topological superconductors in a one dimensional geometry
Marek Narozniak, Matthieu Dartiailh, Jonathan P. Dowling +2
We propose and analyze a physical system capable of performing topological quantum computation with Majorana zero modes (MZM) in a one-dimensional topological superconductor (1DTS)…
High-energy side-peak emission of exciton-polariton condensates in high density regime
Tomoyuki Horikiri, Makoto Yamaguchi, Kenji Kamide +9
In a standard semiconductor laser, electrons and holes recombine via stimulated emission to emit coherent light, in a process that is far from thermal equilibrium. Exciton-polarito…
Suppression of ac Stark shift scattering rate due to non-Markovian behavior
Muzaffar Q. Lone, Tim Byrnes
The ac Stark shift in the presence of spontaneous decay is typically considered to induce an effective dephasing with a scattering rate equal to , where $ Î_s…
Phase assumption-free multiparty quantum clock synchronization
Hatim A. Oujaa, Qiao Liu, Ebubechukwu O. Ilo-Okeke +3
We investigate methods to broadcast timing information from a central clock to all other clocks by the use of multipartite entanglement. This task is a necessary step in establishi…
Ergotropy and capacity optimization in Heisenberg spin-chain quantum batteries
Asad Ali, Saif Al-Kuwari, M. I. Hussain +5
This study examines the performance of finite spin quantum batteries (QBs) using Heisenberg spin models with Dzyaloshinsky-Moriya (DM) and Kaplan--Shekhtman--Entin-Wohlman--Aharony…
The negative Bogoliubov dispersion in exciton-polariton condensates
Tim Byrnes, Tomoyuki Horikiri, Natsuko Ishida +2
Bogoliubov's theory states that self-interaction effects in Bose-Einstein condensates produce a characteristic linear dispersion at low momenta. One of the curious features of Bogo…
Quadratic Quantum Speedup for Perceptron Training
Pengcheng Liao, Barry C. Sanders, Tim Byrnes
Perceptrons, which perform binary classification, are the fundamental building blocks of neural networks. Given a data set of size~ and margin~ (how well the given data are…
Faraday imaging induced squeezing of a double-well Bose-Einstein condensate
Ebubechukwu O. Ilo-Okeke, Shinichi Sunami, Christopher J. Foot +1
We examine how non-destructive measurements generate spin squeezing in an atomic Bose-Einstein condensate confined in a double-well trap. The condensate in each well is monitored u…
Remote state preparation of two-component Bose-Einstein condensates
Manish Chaudhary, Matteo Fadel, Ebubechukwu O. Ilo-Okeke +3
A protocol for remote state preparation is proposed for spin ensembles, where the aim is to prepare a state with a given set of spin expectation values on a remote spin ensemble us…
A Two-Kind-Boson Mixture Honeycomb Hamiltonian of Bloch Exciton-Polaritons
Haining Pan, K. Winkler, Mats Powlowski +9
The electronic bandstructure of a solid is a collection of allowed bands separated by forbidden bands, revealing the geometric symmetry of the crystal structures. Comprehensive kno…
Split spin-squeezed Bose-Einstein Condensates
Yumang Jing, Matteo Fadel, Valentin Ivannikov +1
We investigate and model the behaviour of split spin-squeezed Bose-Einstein condensates (BECs) system. In such a system, a spin-polarized BEC is first squeezed using a …
Highly excited exciton-polariton condensates
Tomoyuki Horikiri, Tim Byrnes, Kenichiro Kusudo +7
Exciton-polaritons are a coherent electron-hole-photon (e-h-p) system where condensation has been observed in semiconductor microcavities. In contrast to equilibrium Bose-Einstein…
Skyrmion quantum spin Hall effect
Tianqi Chen, Tim Byrnes
The quantum spin Hall effect is conventionally thought to require a strong spin-orbit coupling, producing an effective spin-dependent magnetic field. However, spin currents can als…
Fragility of quantum correlations and coherence in a multipartite photonic system
Huan Cao, Chandrashekar Radhakrishnan, Ming Su +6
Certain quantum states are well-known to be particularly fragile in the presence of decoherence, as illustrated by Schrodinger's famous gedanken cat experiment. It has been better…
Flux unwinding in the lattice Schwinger model
Chris Nagele, J. Eduardo Cejudo, Tim Byrnes +1
We study the dynamics of the massive Schwinger model on a lattice using exact diagonalization. When periodic boundary conditions are imposed, analytic arguments indicate that a non…
Optimization using Bose-Einstein condensation and measurement-feedback circuits
Tim Byrnes, Kai Yan, Yoshihisa Yamamoto
We investigate a computational device that harnesses the effects of Bose-Einstein condensation (BEC) to accelerate the speed of finding the solution of a given optimization problem…
Ultrahigh threshold nonstabilizer nonlinear quantum error correcting code
Maga Grafe, Kaixuan Zhou, Zaman Tekin +5
We introduce a novel type of quantum error correcting code, called the spinor code, based on spaces defined by total spin. The code is a nonstabilizer code, and is also a nonlinear…
Entanglement generation in quantum networks of Bose-Einstein condensates
Alexey N. Pyrkov, Tim Byrnes
Two component (spinor) Bose-Einstein condensates (BECs) are considered as the nodes of an interconnected quantum network. Unlike standard single-system qubits, in a BEC the quantum…
Quantum teleportation of spin coherent states: beyond continuous variables teleportation
Alexey Pyrkov, Tim Byrnes
We introduce a quantum teleportation scheme that can transfer a macroscopic spin coherent state between two locations. In the scheme a large number of copies of a qubit, such as re…
Optical Soliton Propagation in a Free-Standing Nonlinear Graphene Monolayer with Defects
Frederick Ira Moxley, Tim Byrnes, Adarsh Radadia +1
Recently, optical soliton propagation in an intrinsic nonlinear graphene monolayer configuration has been discovered. However, optical soliton behavior in a free-standing graphene…
Neural networks using two-component Bose-Einstein condensates
Tim Byrnes, Shinsuke Koyama, Kai Yan +1
The authors previously considered a method solving optimization problems by using a system of interconnected network of two component Bose-Einstein condensates (Byrnes, Yan, Yamamo…
Quantum Decoding Algorithms: Quantum Speedups in Optimization
Jan Ljubas, Tim Byrnes
Attaining a quantum speedup in solving practically useful optimization problems has been one of the holy grails in the field of quantum computing. While prior approaches have demon…
Quantum interference between light sources separated by 150 million kilometers
Yu-Hao Deng, Hui Wang, Xing Ding +18
We report an experiment to test quantum interference, entanglement and nonlocality using two dissimilar photon sources, the Sun and a semiconductor quantum dot on the Earth, which…
Photon loss effects on light-mediated non-Gaussian entangled Bose-Einstein condensates projecting with different photon measurement outcomes
Shuai Gao, Manish Chaudhary, Alexey N. Pyrkov +6
The theory of quantum information processing for macroscopic qubits is based on the fact that every macroscopic qubit has a conserved number of particles. However, from an experime…
Exponential convergence dynamics in Grover's search algorithm
Samuel Cogan, Jonathan Raghoonanan, Tim Byrnes
Grover's search algorithm is the cornerstone of many applications of quantum computing, providing a quadratic speed-up over classical methods. One limitation of the algorithm is th…
Bell correlations in a split two-mode-squeezed Bose-Einstein condensate
Jonas Kitzinger, Xin Meng, Matteo Fadel +4
We propose and analyze a protocol for observing a violation of the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality using two spatially separated Bose-Einstein condensates (BECs).…
High accuracy energy formulas for the attractive two-site Bose-Hubbard model
Igor Ermakov, Tim Byrnes, Nikolay Bogoliubov
The attractive two-site Bose-Hubbard model is studied within the framework of the analytical solution obtained by the application of Quantum Inverse Scattering Method. The structur…
Imaginary time evolution with quantum nondemolition measurements: multi-qubit interactions via measurement nonlinearities
Manikandan Kondappan, Manish Chaudhary, Ebubechukwu O. Ilo-Okeke +2
We show that quantum nondemolition (QND) measurements can be used to realize measurement-based imaginary time evolution. In our proposed scheme, repeated weak QND measurements are…
Hybrid Quantum Error Correction and Mitigation by Purification
Jonathan Raghoonanan, Tim Byrnes
Quantum error correction physically removes errors from a quantum state, while quantum error mitigation improves observable estimates by processing noisy measurement data. We intro…
Bitcoin and quantum computing
Louis Tessler, Tim Byrnes
Bitcoin is a digital currency and payment system based on classical cryptographic technologies which works without a central administrator such as in traditional currencies. It has…
Renormalization of Anisotropy and Glueball Masses on Tadpole Improved Lattice Gauge Action
Mushtaq Loan, Tim Byrnes, Chris Hamer
The Numerical calculations for tadpole-improved U(1) lattice gauge theory in three-dimensions on anisotropic lattices have been performed using standard path integral Monte Carlo t…
Information and backaction due to phase contrast imaging measurements of cold atomic gases: beyond Gaussian states
Ebubechukwu O. Ilo-Okeke, Tim Byrnes
We further examine a theory of phase contrast imaging (PCI) of cold atomic gases, first introduced by us in Phys. Rev. Lett. {\bf 112}, 233602 (2014). We model the PCI measurement…
Deep learning of many-body observables and quantum information scrambling
Naeimeh Mohseni, Junheng Shi, Tim Byrnes +1
Machine learning has shown significant breakthroughs in quantum science, where in particular deep neural networks exhibited remarkable power in modeling quantum many-body systems.…
Exciton-polariton condensates
Tim Byrnes, Na Young Kim, Yoshihisa Yamamoto
Recently a new type of system exhibiting spontaneous coherence has emerged -- the exciton-polariton condensate. Exciton-polaritons (or polaritons for short) are bosonic quasipartic…
Distillation of supersinglet states
Saeed Ahmad, Shuang Li, Jonathan Raghoonanan +3
We introduce an entanglement distillation (purification) protocol for supersinglet states composed of N qubits. The supersinglet state we target is a total spin zero state with zer…
Time dynamics of Bethe ansatz solvable models
Igor Ermakov, Tim Byrnes
We develop a method for finding the time evolution of exactly solvable models by Bethe ansatz. The dynamical Bethe wavefunction takes the same form as the stationary Bethe wavefunc…
Macroscopic maximally entangled state preparation between two atomic ensembles
Manish Chaudhary, Ebubechukwu O. Ilo-Okeke, Valentin Ivannikov +1
We develop a scheme to prepare a macroscopic maximally entangled state (MMES) between two atomic ensembles using adaptive quantum nondemolition (QND) measurements. The quantum stat…
Driven Dipolariton Transistors in Y-shaped Channels
Patrick Serafin, Tim Byrnes, German Kolmakov
Exciton-dipolaritons are investigated as a platform for realizing working elements of a polaritronic transistor. Exciton-dipolaritons are three-way superposition of cavity photons,…
Quantum simulator for the Hubbard model with long-range Coulomb interactions using surface acoustic waves
Tim Byrnes, Patrik Recher, Na Young Kim +2
A practical experimental scheme for a quantum simulator of strongly correlated electrons is proposed. Our scheme employs electrons confined in a two dimensional electron gas in a G…
Deterministic preparation of supersinglets with collective spin projections
Ebubechukwu O. Ilo-Okeke, Yangxu Ji, Ping Chen +5
We introduce a procedure to generate supersinglets, the multipartite generalization of angular momentum singlet states. A supersinglet is defined as a total spin zero state consist…
Neutral atom entangling gate in the ultrastrong coupling regime
Ebubechukwu O. Ilo-Okeke, Tongzhou Wang, Valentin Ivannikov +1
We propose a method to deterministically entangle qubits or ensembles of qubits interacting with a shared bosonic mode in the ultrastrong coupling regime. We show that the resultin…
Correlation based entanglement criteria for bipartite systems
Yumang Jing, Qiongyi He, Tim Byrnes
We introduce a class of inequalities based on low order correlations of operators to detect entanglement in bipartite systems. The operators may either be Hermitian or non-Hermitia…
Rényi relative entropy based monogamy of entanglement in tripartite systems
Marwa Mannaï, Hisham Sati, Tim Byrnes +1
A comprehensive investigation of the entanglement characteristics is carried out on tripartite spin-1/2 systems, examining prototypical tripartite states, the thermal Heisenberg mo…
Generalized Grover's algorithm for multiple phase inversion states
Tim Byrnes, Gary Forster, Louis Tessler
Grover's algorithm is a quantum search algorithm that proceeds by repeated applications of the Grover operator and the Oracle until the state evolves to one of the target states. I…
Magnetic Dipolar Quantum Battery with Spin-Orbit Coupling
Asad Ali, Samira Elghaayda, Saif Al-Kuwari +7
We investigate a magnetic dipolar system influenced by the -component of Zeeman splitting, Dzyaloshinsky--Moriya (DM) interaction, and Kaplan--Shekhtman--Entin-Wohlman--Aharony…
Time dynamics of quantum coherence and monogamy in a non-Markovian environment
Chandrashekar Radhakrishnan, Po-Wen Chen, Segar Jambulingam +2
The time evolution of the distribution and shareability of quantum coherence of a tripartite system in a non-Markovian environment is examined. The total coherence can be decompose…
Macroscopic quantum teleportation with ensembles of qubits
Manish Chaudhary, Zhiyuan Lin, Shuang Li +4
We develop methods for performing quantum teleportation of the total spin variables of an unknown state, using quantum nondemolition measurements, spin projection measurements, and…
Quantum Hall effect with small numbers of vortices in Bose-Einstein condensates
Tim Byrnes, Jonathan P. Dowling
When vortices are displaced in Bose-Einstein condensates (BEC), the Magnus force gives the system a momentum transverse in the direction to the displacement. We show that Bose-Eins…
Implementing the Deutsch-Jozsa algorithm with macroscopic ensembles
Henry Semenenko, Tim Byrnes
Quantum computing implementations under consideration today typically deal with systems with microscopic degrees of freedom such as photons, ions, cold atoms, and superconducting c…
Effective interaction and condensation of dipolaritons in coupled quantum wells
Tim Byrnes, German V. Kolmakov, Roman Ya. Kezerashvili +1
Dipolaritons are a three-way superposition of photon, a direct exciton, and an indirect exciton that are formed in coupled quantum well microcavities. As is the case with exciton-p…
Quantum nondemolition measurement operator with spontaneous emission
Ebubechukwu O. Ilo-Okeke, Tim Byrnes
We present a theory for quantum nondemolition (QND) measurements of an atomic ensemble in the presence of spontaneous emission. We derive the master equation that governs the evolu…
Optical and atomic decoherence in entangled atomic ensembles generated by quantum nondemolition measurements
Shuai Gao, Shuang Li, Manish Chaudhary +4
We study the effects of decoherence in the form of optical phase diffusion, photon loss and gain, and atomic dephasing in entangled atomic ensembles produced via quantum nondemolit…
Landau-Zener transition stabilized by the enhanced quantum Zeno effect in the bosonic system
Kai Wen, Tim Byrnes, Yoshihisa Yamamoto
We study the Landau-Zener transition with the quantum Zeno effect in an open dissipative system populated by a large number of bosons. Given the quantum Zeno effect is strong enoug…
Relativity of quantum states in entanglement swapping: Violation of Bell's inequality with no entanglement
Chris Nagele, Ebubechukwu O. Ilo-Okeke, Peter P. Rohde +2
The entanglement swapping protocol is analyzed in a relativistic setting, where shortly after the entanglement swapping is performed, a Bell violation measurement is performed. Fro…
Basis-independent quantum coherence and its distribution
Chandrashekar Radhakrishnan, Zhe Ding, Fazhan Shi +2
We analyze a basis-independent definition of quantum coherence. The maximally mixed state is used as the reference state, which allows for a way of defining coherence that is invar…
Cooper pair polaritons in cold fermionic atoms within a cavity
Amaury Dodel, Alexander Pikovski, Igor Ermakov +4
We formulate a Bardeen-Cooper-Schriffer (BCS) theory of quasiparticles in a degenerate Fermi gas strongly coupled to photons in a optical cavity. The elementary photonic excitation…
Devil's crevasse and macroscopic entanglement in two-component Bose-Einstein condensates
Tim Byrnes
Spin coherent states are the matter equivalent of optical coherent states, where a large number of two component particles form a macroscopic state displaying quantum coherence. He…
Sagnac interferometry with coherent vortex superposition states in exciton-polariton condensates
Frederick Ira Moxley, Jonathan P. Dowling, Weizhong Dai +1
We investigate prospects of using counter-rotating vortex superposition states in non-equilibrium exciton-polariton Bose-Einstein condensates for the purposes of Sagnac interferome…
On the role of the measurement apparatus in quantum measurements
Muzaffar Qadir Lone, Chris Nagele, Brad Weslake +1
We study the extent to which the outcomes of a quantum measurement can be manipulated by changing the state of the measurement apparatus. The measurement process is modeled as deco…
Non-equilibrium time dynamics of genetic evolution
Hamid-Reza Rastegar-Sedehi, Chandrashekar Radhakrishnan, Samer Intissar Nehme +3
Biological systems are typically highly open, non-equilibrium systems that are very challenging to understand from a statistical mechanics perspective. While statistical treatments…
Hybrid approximation approach to generation of atomic squeezing with quantum nondemolition measurements
Ebubechukwu O. Ilo-Okeke, Manikandan Kondappan, Ping Chen +3
We analyze a scheme that uses quantum nondemolition measurements to induce squeezing of a spinor Bose-Einstein condensate in a double well trap. In a previous paper [Ilo-Okeke et a…
Efficient preparation of the AKLT State with Measurement-based Imaginary Time Evolution
Tianqi Chen, Tim Byrnes
Quantum state preparation plays a crucial role in several areas of quantum information science, in applications such as quantum simulation, quantum metrology and quantum computing.…
Characterizing coherence with quantum observables
Suman Mandal, Marek Narozniak, Chandrashekar Radhakrishnan +3
We introduce a procedure based on quantum expectation values of measurement observables to characterize quantum coherence. Our measure allows one to quantify coherence without havi…
Correlation-based entanglement criterion in bipartite multiboson systems
Wieslaw Laskowski, Marcin Markiewicz, Danny Rosseau +3
We describe a criterion for the detection of entanglement between two multi-boson systems. The criterion is based on calculating correlations of Gell-Mann matrices with a fixed bos…
Multipartite Spin Coherent States and Spinor States
Tim Byrnes
Multipartite generalizations of spin coherent states are introduced and analyzed. These are the spin analogues of multimode optical coherent states as used in continuous variable q…
Macroscopic entanglement distribution with atomic ensembles
Shuang Li, Jin Hu, Ilia D. Lazarev +4
The distribution of entanglement is a crucial task for quantum communication towards realizing a globe-spanning quantum internet. Recently a protocol for deterministic long-distanc…
Measurement operator for quantum nondemolition measurements
Ebubechukwu O. Ilo-Okeke, Ping Chen, Shuang Li +3
We derive a measurement operator corresponding to a quantum nondemolition (QND) measurement of an atomic ensemble. The quantum measurement operator takes the form of a positive ope…
Ultrafast coherent control of spinor Bose-Einstein condensates using stimulated Raman adiabatic passage
Andreas Thomasen, Tetsuya Mukai, Tim Byrnes
We propose the use of stimulated Raman adiabatic passage (STIRAP) to offer a fast high fidelity method of performing SU(2) rotations on spinor Bose Einstein condensates (BEC). Past…
Distribution of quantum coherence in multipartite systems
R. Chandrashekar, P. Manikandan, J. Segar +1
The distribution of coherence in multipartite systems in examined. We use a new coherence measure with entropic nature and metric properties, based on the quantum Jensen-Shannon di…
A multipartite generalization of quantum discord
Chandrashekar Radhakrishnan, Mathieu Lauriere, Tim Byrnes
A generalization of quantum discord to multipartite systems is proposed. A key feature of our formulation is its consistency with the conventional definition of discord in bipartit…
Lorentz invariant entanglement distribution for the space-based quantum network
Tim Byrnes, Batyr Ilyas, Louis Tessler +3
In recent years there has been a great deal of focus on a globe-spanning quantum network, including linked satellites for applications ranging from quantum key distribution to dist…
A loophole-free Wheeler-delayed-choice experiment
H. -L. Huang, Y. -H. Luo, B. Bai +13
Wheeler's delayed-choice experiment investigates the indeterminacy of wave-particle duality and the role played by the measurement apparatus in quantum theory. Due to the inconsist…
Cavity-induced mirror-mirror entanglement in a single-atom Raman laser
Berihu Teklu, Tim Byrnes, Faisal Shah Khan
We address an experimental scheme to analyze the optical bistability and the entanglement of two movable mirrors coupled to a two-mode laser inside a doubly resonant cavity. With t…
Adiabatic entangling gate of Bose-Einstein condensates based on the minimum function
Sergi Ortiz, Yilun Song, June Wu +2
A scheme is presented to perform an entangling gate between two atomic ensembles or Bose-Einstein condensates in a optical cavity with a common optical mode. The method involves us…
Measurement-based deterministic imaginary time evolution
Yuping Mao, Manish Chaudhary, Manikandan Kondappan +4
We introduce a method to perform imaginary time evolution in a controllable quantum system using measurements and conditional unitary operations. By performing a sequence of weak m…
Stroboscopic quantum nondemolition measurements for enhanced entanglement generation between atomic ensembles
Manish Chaudhary, Yuping Mao, Manikandan Kondappan +3
We develop a measurement operator formalism to handle quantum nondemolition (QND) measurement induced entanglement generation between two atomic gases. We first derive how the QND…
Photoluminescence of high-density exciton-polariton condensates
Natsuko Ishida, Tim Byrnes, Tomoyuki Horikiri +2
We examine the photoluminescence of highly-excited exciton-polariton condensates in semiconductor microcavities. Under strong pumping, exciton-polariton condensates have been obser…
Quantum Atom Optics: Theory and Applications to Quantum Technology
Tim Byrnes, Ebubechukwu O. Ilo-Okeke
This is a pre-publication version of a forthcoming book on quantum atom optics. It is written as a senior undergraduate to junior graduate level textbook, assuming knowledge of bas…
Deep recurrent networks predicting the gap evolution in adiabatic quantum computing
Naeimeh Mohseni, Carlos Navarrete-Benlloch, Tim Byrnes +1
In adiabatic quantum computing finding the dependence of the gap of the Hamiltonian as a function of the parameter varied during the adiabatic sweep is crucial in order to optimize…
Simple determination of dark states in a general multi-level system
Kaixuan Zhou, June Wu, Junheng Shi +1
In a multi-level energy system with energy transitions, dark states are eigenstates of a Hamiltonian that consist entirely of ground states, with zero amplitude in the excited stat…
Quantum supremacy with spin squeezed atomic ensembles
Yueheng Shi, Junheng Shi, Tim Byrnes
We propose a method to achieve quantum supremacy using ensembles of qubits, using only spin squeezing, basis rotations, and Fock state measurements. Each ensemble is assumed to be…
Topological Unwinding in an Exciton-Polariton Condensate Array
Guitao Lyu, Yuki Minami, Na Young Kim +2
The phase distribution in a Bose-Einstein condensate can realize various topological states classified by distinct winding numbers. While states with different winding numbers are…
Quantum teleportation of cat states with binary-outcome measurements
Jingyan Feng, Mohan Zhang, Matteo Fadel +1
We propose a teleportation protocol involving beam splitting operations and binary-outcome measurements, such as parity measurements. These operations have a straightforward implem…
Decoherence effects in quantum nondemolition measurement induced entanglement between Bose-Einstein condensates
Shuai Gao, Ebubechukwu O. Ilo-Okeke, Yuping Mao +4
We study the robustness of quantum nondemolition (QND) measurement-induced entanglement between Bose-Einstein Condensates (BECs). We consider an experimental scheme where two BECs…
Generalized framework for applying the Kelly criterion to stock markets
Tim Byrnes, Tristan Barnett
We develop a general framework for applying the Kelly criterion to stock markets. By supplying an arbitrary probability distribution modeling the future price movement of a set of…
Two-axis two-spin squeezed states
Jonas Kitzinger, Manish Chaudhary, Manikandan Kondappan +2
The states generated by the two-spin generalization of the two-axis countertwisting Hamiltonian are examined. We analyze the behavior at both short and long timescales, by calculat…
Fingering instabilities and pattern formation in a two-component dipolar Bose-Einstein condensate
Kui-Tian Xi, Tim Byrnes, Hiroki Saito
We study fingering instabilities and pattern formation at the interface of an oppositely polarized two-component Bose-Einstein condensate with strong dipole-dipole interactions in…
Emulating quantum teleportation of a Majorana zero mode qubit
He-Liang Huang, Marek Narozniak, Futian Liang +14
Topological quantum computation based on anyons is a promising approach to achieve fault-tolerant quantum computing. The Majorana zero modes in the Kitaev chain are an example of n…
Shortcut to adiabaticity improvement of STIRAP based qubit rotation
Khayla Black, Xi Chen, Tim Byrnes
Robust quantum control is essential for the development of quantum computers, which rely on precise manipulation of qubits. One form of quantum control is stimulated Raman adiabati…
Thermal coherence of the Heisenberg model with Dzyaloshinsky-Moriya interactions in an inhomogenous external field
Manikandan Parthasarathy, Segar Jambulingam, Tim Byrnes +1
The quantum coherence of the two-site XYZ model with Dzyaloshinsky-Moriya (DM) interactions in an external inhomogenous magnetic field is studied. The DM interaction, the magnetic…
Influence of Noninertial Dynamics on Static Quantum Resource Theories
Saveetha Harikrishnan, Tim Byrnes, Chandrashekar Radhakrishnan
The effect of noninertial dynamics on static quantum resource theories is investigated. To this end, we first show the equivalence between noninertial effects and a completely posi…
Steady-state generation of negative-Wigner-function light using feedback
Cristian Joana, Peter van Loock, Hui Deng +1
We propose a method of producing steady-state coherent light with negative Wigner functions in nonlinear media combined with feedback control. While the nonlinearities are essentia…
Experimental study of quantum coherence decomposition and trade-off relations in a tripartite system
Zhe Ding, Ran Liu, Chandrashekar Radhakrishnan +6
Quantum coherence is the most fundamental of all quantum quantifiers, underlying other well-known quantities such as entanglement, quantum discord, and Bell correlations. It can be…
A magic monotone for faithful detection of non-stabilizerness in mixed states
Krzysztof Warmuz, Ernest Dokudowiec, Chandrashekar Radhakrishnan +1
We introduce a monotone to quantify the amount of non-stabilizerness (or magic for short), in an arbitrary quantum state. The monotone gives a necessary and sufficient criterion fo…
GaAs Microcavity Exciton-Polaritons in a Trap
Na Young Kim, Chih-Wei Lai, Shoko Utsunomiya +8
We present a simple method to create an in-plane lateral potential in a semiconductor microcavity using a metal thin-film. Two types of potential are produced: a circular aperture…