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Amplified opto-mechanical transduction of virtual radiation pressure
Mauro Cirio, Kamanasish Debnath, Neill Lambert +1
Here we describe how, utilizing a time-dependent opto-mechanical interaction, a mechanical probe can provide an amplified measurement of the virtual photons dressing the quantum gr…
Hybrid quantum device with a carbon nanotube and a flux qubit for dissipative quantum engineering
Xin Wang, Adam Miranowicz, Hong-Rong Li +1
We describe a hybrid quantum system composed of a micrometer-size carbon nanotube (CNT) longitudinally coupled to a flux qubit. We demonstrate the usefulness of this device for gen…
Superradiance with an ensemble of superconducting flux qubits
Neill Lambert, Yuichiro Matsuzaki, Kosuke Kakuyanagi +3
Superconducting flux qubits are a promising candidate for realizing quantum information processing and quantum simulations. Such devices behave like artificial atoms, with the adva…
Photonic multipartite entanglement conversion using nonlocal operations
T. Tashima, M. S. Tame, Ş. K. Özdemir +3
We propose a simple setup for the conversion of multipartite entangled states in a quantum network with restricted access. The scheme uses nonlocal operations to enable the prepara…
Temporal Steering in Four Dimensions with applications to coupled qubits and magnetoreception
Huan-Yu Ku, Shin-Liang Chen, Hong-Bin Chen +3
Einstein-Podolsky-Rosen (EPR) steering allows Alice to remotely prepare a state in some specific bases for Bob through her choice of measurements. The temporal analogue of EPR stee…
Controllable optical response by modifying the gain and loss of a mechanical resonator and cavity mode in an optomechanical system
Yu-Long Liu, Rebing Wu, Jing Zhang +4
We theoretically study a strongly-driven optomechanical system which consists of a passive optical cavity and an active mechanical resonator. When the optomechanical coupling stren…
Magnetic field effects in electron systems with imperfect nesting
A. O. Sboychakov, A. L. Rakhmanov, K. I. Kugel +2
We analyze the effects of an applied magnetic field on the phase diagram of a weakly-correlated electron system with imperfect nesting. The Hamiltonian under study describes two ba…
High-order exceptional points in optomechanics
H. Jing, Ş. K. Özdemir, H. Lü +1
We study mechanical cooling in systems of coupled passive (lossy) and active (with gain) optical resonators. We find that for a driving laser which is red-detuned with respect to t…
Spatio-Temporal Steering for Testing Nonclassical Correlations in Quantum Networks
Shin-Liang Chen, Neill Lambert, Che-Ming Li +4
We introduce the concept of spatio-temporal steering (STS), which reduces, in special cases, to Einstein-Podolsky-Rosen steering and the recently-introduced temporal steering. We d…
Lattice Surgery Translation for Quantum Computation
Daniel Herr, Franco Nori, Simon J. Devitt
In this paper we outline a method for a compiler to translate any non fault tolerant quantum circuit to the geometric representation of the lattice surgery error-correcting code us…
Heralded quantum controlled phase gates with dissipative dynamics in macroscopically-distant resonators
Wei Qin, Xin Wang, Adam Miranowicz +2
Heralded near-deterministic multi-qubit controlled phase gates with integrated error detection have recently been proposed by Borregaard et al. [Phys. Rev. Lett. 114, 110502 (2015)…
Floquet spectrum and driven conductance in Dirac materials: Effects of Landau-Zener-Stückelberg-Majorana interferometry
Ya. I. Rodionov, K. I. Kugel, Franco Nori
Using the Landau-Zener-Stückelberg-Majorana-type (LZSM) semiclassical approach, we study both graphene and a thin film of a Weyl semimetal subjected to a strong AC electromagnetic…
Hybrid quantum device with nitrogen-vacancy centers in diamond coupled to carbon nanotubes
Peng-Bo Li, Ze-Liang Xiang, Peter Rabl +1
We show that nitrogen-vacancy (NV) centers in diamond interfaced with a suspended carbon nanotube carrying a dc current can facilitate a spin-nanomechanical hybrid device. We demon…
Multi-output microwave single-photon source using superconducting circuits with longitudinal and transverse couplings
Xin Wang, Adam Miranowicz, Hong-Rong Li +1
Single-photon devices at microwave frequencies are important for applications in quantum information processing and communication in the microwave regime. In this work, we describe…
Entangling two oscillators with arbitrary asymmetric initial states
Chui-Ping Yang, Qi-Ping Su, Shi-Biao Zheng +2
A Hamiltonian is presented, which can be used to convert any asymmetric state of two oscillators and into an entangled state. Furthermore, with…
Learning robust control for generating universal quantum gates
Daoyi Dong, Chengzhi Wu, Chunlin Chen +3
Constructing a set of universal quantum gates is a fundamental task for quantum computation. The existence of noises, disturbances and fluctuations is unavoidable during the proces…
Anomalous time delays and quantum weak measurements in optical micro-resonators
M. Asano, K. Y. Bliokh, Y. P. Bliokh +8
We study inelastic resonant scattering of a Gaussian wave packet with the parameters close to a zero of the complex scattering coefficient. We demonstrate, both theoretically and e…
Method for identifying electromagnetically induced transparency in a tunable circuit quantum electrodynamics system
Qi-Chun Liu, Tie-Fu Li, Xiao-Qing Luo +9
Electromagnetically induced transparency (EIT) has been realized in atomic systems, but fulfilling the EIT conditions for artificial atoms made from superconducting circuits is a m…
Electric-field-induced interferometric resonance of a one-dimensional spin-orbit-coupled electron
Jingtao Fan, Yuansen Chen, Gang Chen +3
We consider a one-dimensional spin-orbit-coupled nanowire quantum dot, driven by external electric and magnetic fields, and theoretically formulate an electric mechanism to interfe…
Information gain versus interference in Bohr's principle of complementarity
Yan Liu, Jing Lu, Lan Zhou +1
Based on modern quantum measurement theory, we use Zurek's "triple model" to study, from the viewpoint of quantum information theory, the wave and particle nature of a photon in a…
Leggett--Garg inequality violations with a large ensemble of qubits
Neill Lambert, Kamanasish Debnath, Anton Frisk Kockum +3
We investigate how discrete internal degrees of freedom in a quasi-macroscopic system affect the violation of the Leggett--Garg inequality, a test of macroscopic-realism based on t…
Experimental quantum forgery of quantum optical money
Karol Bartkiewicz, Antonín Černoch, Grzegorz Chimczak +3
Unknown quantum information cannot be perfectly copied (cloned). This statement is the bedrock of quantum technologies and quantum cryptography, including the seminal scheme of Wie…
Coherent transfer of electron spin correlations assisted by dephasing noise
Takashi Nakajima, Matthieu R. Delbecq, Tomohiro Otsuka +10
Quantum coherence of superposed states, especially of entangled states, is indispensable for many quantum technologies. However, it is vulnerable to environmental noises, posing a…
Comparison of the sensitivity to systematic errors between non-adiabatic non-Abelian geometric gates and their dynamical counterparts
Shi-Biao Zheng, Chui-Ping Yang, Franco Nori
We investigate the effects of systematic errors of the control parameters on single-qubit gates based on non-adiabatic non-Abelian geometric holonomies and those relying on purely…