3.3k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Fermi National Accelerator LaboratoryUS2.4k papers
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16 papers · 2 filters
Continuous Measurement Boosted Adiabatic Quantum Thermal Machines
Bibek Bhandari, Andrew N. Jordan
We present a unified approach to study continuous measurement based quantum thermal machines in static as well as adiabatically driven systems. We investigate both steady state and…
Variational principle for optimal quantum controls in quantum metrology
Jing Yang, Shengshi Pang, Zekai Chen +2
We develop a variational principle to determine the quantum controls and initial state which optimizes the quantum Fisher information, the quantity characterizing the precision in…
Energetics of a Single Qubit Gate
Jeremy Stevens, Daniel Szombati, Maria Maffei +10
Qubits are physical, a quantum gate thus not only acts on the information carried by the qubit but also on its energy. What is then the corresponding flow of energy between the qub…
Optimal qubit circuits for quantum-enhanced telescopes
Robert Czupryniak, John Steinmetz, Paul G. Kwiat +1
We propose two optimal phase-estimation schemes that can be used for quantum-enhanced long-baseline interferometry. By using distributed entanglement, it is possible to eliminate t…
Experimental demonstration of continuous quantum error correction
William P. Livingston, Machiel S. Blok, Emmanuel Flurin +3
The storage and processing of quantum information are susceptible to external noise, resulting in computational errors that are inherently continuous A powerful method to suppress…
Efficiently Fuelling a Quantum Engine with Incompatible Measurements
Sreenath K. Manikandan, Cyril Elouard, Kater W. Murch +2
We propose a quantum harmonic oscillator measurement engine fueled by simultaneous quantum measurements of the non-commuting position and momentum quadratures of the quantum oscill…
Minimal two-body quantum absorption refrigerator
Bibek Bhandari, Andrew N. Jordan
We study the phenomenon of absorption refrigeration, where refrigeration is achieved by heating instead of work, in two different setups: a minimal set up based on coupled qubits,…
Continuous measurement of a qudit using dispersively coupled radiation
John Steinmetz, Debmalya Das, Irfan Siddiqi +1
We analyze the continuous monitoring of a qudit coupled to a cavity using both phase-preserving and phase-sensitive amplification. The quantum trajectories of the system are descri…
Enhanced weak-value amplification via photon recycling
Courtney Krafczyk, Andrew N. Jordan, Michael E. Goggin +1
In a quantum-noise limited system, weak-value amplification using post-selection normally does not produce more sensitive measurements than standard methods for ideal detectors: th…
Super-Heisenberg scaling in Hamiltonian parameter estimation in the long-range Kitaev chain
Jing Yang, Shengshi Pang, Adolfo del Campo +1
In quantum metrology, nonlinear many-body interactions can enhance the precision of Hamiltonian parameter estimation to surpass the Heisenberg scaling. Here, we consider the estima…
Enhanced on-chip frequency measurement using weak value amplification
John Steinmetz, Kevin Lyons, Meiting Song +2
We present an integrated design to precisely measure optical frequency using weak value amplification with a multi-mode interferometer. The technique involves introducing a weak pe…
Stochastic Path Integral Analysis of the Continuously Monitored Quantum Harmonic Oscillator
Tathagata Karmakar, Philippe Lewalle, Andrew N. Jordan
We consider the evolution of a quantum simple harmonic oscillator in a general Gaussian state under simultaneous time-continuous weak position and momentum measurements. We deduce…
Quantum routing with fast reversals
Aniruddha Bapat, Andrew M. Childs, Alexey V. Gorshkov +3
We present methods for implementing arbitrary permutations of qubits under interaction constraints. Our protocols make use of previous methods for rapidly reversing the order of qu…
Selective Excitation of Subwavelength Atomic Clouds
Rasoul Alaee, Akbar Safari, Robert W. Boyd
A dense cloud of atoms with randomly changing positions exhibits coherent and incoherent scattering. We show that an atomic cloud of subwavelength dimensions can be modeled as a si…
Direct tomography of high-dimensional density matrices for general quantum states of photons
Yiyu Zhou, Jiapeng Zhao, Darrick Hay +3
Quantum state tomography is the conventional method used to characterize density matrices for general quantum states. However, the data acquisition time generally scales linearly w…
A Triangle Governs Genuine Tripartite Entanglement
Songbo Xie, Joseph H. Eberly
A previously overlooked constraint for the distribution of entanglement in three-qubit systems is exploited for the first time and used to reveal a new genuine tripartite entanglem…