Showing 2020 · quant-phShow all

17 papers · 2 filters

quant-ph2020★ 14 cited

Telecom C-Band Photon-Pair Generation using Standard SMF-28 Fiber

Kyungdeuk Park, Dongjin Lee, Robert W. Boyd +1

Photon-pair generation must satisfy both the energy conservation and phase-matching conditions with a specific pump wavelength and dispersion of nonlinear optical medium, but findi…

quant-ph2020★ 23 cited

Stochastic Thermodynamic Cycles of a Mesoscopic Thermoelectric Engine

R David Mayrhofer, Cyril Elouard, Janine Splettstoesser +1

We analyze a steady-state thermoelectric engine, whose working substance consists of two capacitively coupled quantum dots. One dot is tunnel-coupled to a hot reservoir serving as…

quant-ph2020★ 13 cited

Sudden Freezing and Thawing of Entanglement Sharing in a Shrunken Volume

Yi Ding, Songbo Xie, Joseph H. Eberly

Within the one-excitation context of two identical two-level atoms interacting with a common cavity, we examine the dynamics of all bipartite one-to-other entanglements between eac…

quant-ph2020★ 10 cited

Quantum erasing the memory of Wigner's friend

Cyril Elouard, Philippe Lewalle, Sreenath K. Manikandan +3

The Wigner's friend paradox concerns one of the most puzzling problems of quantum mechanics: the consistent description of multiple nested observers. Recently, a variation of Wigne…

quant-ph2020★ 145 cited

Qutrit randomized benchmarking

A. Morvan, V. V. Ramasesh, M. S. Blok +7

Ternary quantum processors offer significant computational advantages over conventional qubit technologies, leveraging the encoding and processing of quantum information in qutrits…

quant-ph2020★ 2 cited

Quantum system dynamics with a weakly nonlinear Josephson junction bath

Jing Yang, Étienne Jussiau, Cyril Elouard +2

We investigate the influence of a weakly nonlinear Josephson bath consisting of a chain of Josephson junctions on the dynamics of a small quantum system (LC oscillator). Focusing o…

quant-ph2020★ 16 cited

Fundamental quantum limits in ellipsometry

L. Rudnicki, L. L. Sanchez-Soto, G. Leuchs +1

We establish the ultimate limits that quantum theory imposes on the accuracy attainable in optical ellipsometry. We show that the standard quantum limit, as usual reached when the…

quant-ph2020★ 122 cited

A two-qubit engine fueled by entangling operations and local measurements

Léa Bresque, Patrice A. Camati, Spencer Rogers +3

We introduce a two-qubit engine that is powered by entangling operations and projective local quantum measurements. Energy is extracted from the detuned qubits coherently exchangin…

quant-ph2020★ 1 cited

A CMOS-compatible Ising Machine with Bistable Nodes

Richard Afoakwa, Yiqiao Zhang, Uday Kumar Reddy Vengalam +2

Physical Ising machines rely on nature to guide a dynamical system towards an optimal state which can be read out as a heuristical solution to a combinatorial optimization problem.…

quant-ph2020★ 16 cited

Quantification and observation of genuine three-party coherence: A solution based on classical optics

X. -F. Qian, S. A. Wadood, A. N. Vamivakas +1

We introduce a quantification of genuine three-party pure-state coherence for wave fields, classical and quantum, by borrowing concepts from classical optics. The tensor structure…

quant-ph2020★ 105 cited

Resolution of Gauge Ambiguities in Molecular Cavity Quantum Electrodynamics

Michael A. D. Taylor, Arkajit Mandal, Wanghuai Zhou +1

This work provides the fundamental theoretical framework for the molecular cavity Quantum Electrodynamics by resolving the gauge ambiguities between the Coulomb gauge and the dipol…

quant-ph2020★ 7 cited

Nonequilibrium Steady State and Heat Transport in Nonlinear Open Quantum Systems: Stochastic Influence Action and Functional Perturbative Analysis

Jing Yang, Jen-Tsung Hsiang, Andrew N. Jordan +1

In this paper, we show that a nonequilibrium steady state (NESS) exists at late times in open quantum systems with weak nonlinearity by following its nonequilibrium dynamics with a…

quant-ph2020★ 13 cited

Entanglement-Preserving Limit Cycles from Sequential Quantum Measurements and Feedback

Philippe Lewalle, Cyril Elouard, Andrew N. Jordan

Entanglement generation and preservation is a key task in quantum information processing, and a variety of protocols exist to entangle remote qubits via measurement of their sponta…

quant-ph2020

Wave-Particle Duality Controlled by Single-Photon Self-Entanglement

X. -F. Qian, K. Konthasinghe, S. K. Manikandan +3

We experimentally observe that quantum duality of a single photon is controlled by its self-entanglement through a three-way quantum coherence identity . Here V, D,…

quant-ph2020★ 20 cited

Quantifying the quantum heat contribution from a driven superconducting circuit

Cyril Elouard, George Thomas, Olivier Maillet +2

Unveiling the impact in thermodynamics of the phenomena specific to quantum mechanics is a crucial step to identify fundamental costs for quantum operations and quantum advantages…

quant-ph2020★ 39 cited

Thermodynamics of Optical Bloch Equations

Cyril Elouard, David Herrera-Martí, Massimiliano Esposito +1

Optical Bloch Equations (OBE) describe the coherent exchange of energy between a quantum bit (qubit) and a quasi-resonant driving field in the presence of a thermal bath. Despite i…

quant-ph2020★ 11 cited

Delayed choice of paths selected by grin and snarl of quantum Cheshire Cat

Debmalya Das, Ujjwal Sen

The so-called quantum Cheshire Cat is a scenario where a photon, identified with a cat, and a component of its polarization, identified with the grin of that cat, are separated. We…