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Showing 2021 · quant-phShow all

13 papers · 2 filters

quant-ph2021★ 10 cited

Counter-diabatic driving in the classical -Fermi-Pasta-Ulam-Tsingou chain

Nik O. Gjonbalaj, David K. Campbell, Anatoli Polkovnikov

Shortcuts to adiabaticity (STAs) have been used to make rapid changes to a system while eliminating or minimizing excitations in the system's state. In quantum systems, these short…

quant-ph2021★ 16 cited

Deterministic Entanglement Distribution on Series-Parallel Quantum Networks

Xiangyi Meng, Yulong Cui, Jianxi Gao +2

The performance of distributing entanglement between two distant nodes in a large-scale quantum network (QN) of partially entangled bipartite pure states is generally benchmarked a…

quant-ph2021★ 18 cited

Boosting the Quantum State of a Cavity with Floquet Driving

David M. Long, Philip J. D. Crowley, Alicia J. Kollár +1

The striking nonlinear effects exhibited by cavity QED systems make them a powerful tool in modern condensed matter and atomic physics. A recently discovered example is the quantiz…

quant-ph2021★ 97 cited

A quintet of quandaries: five no-go theorems for Relational Quantum Mechanics

Jacques L. Pienaar

Relational quantum mechanics (RQM) proposes an ontology of relations between physical systems, where any system can serve as an `observer' and any physical interaction between syst…

quant-ph2021★ 12 cited

Controllable entangled state distribution in a dual-rail reconfigurable optical network

Shuto Osawa, David S. Simon, Vladimir S. Malinovsky +1

Reconfigurable distribution of entangled states is essential for operation of quantum networks connecting multiple devices such as quantum memories and quantum computers. We introd…

quant-ph2021★ 7 cited

Stability of topological purity under random local unitaries

Salvatore F. E. Oliviero, Lorenzo Leone, You Zhou +1

In this work, we provide an analytical proof of the robustness of topological entanglement under a model of random local perturbations. We define a notion of average topological su…

quant-ph2021★ 9 cited

Aperiodic bandgap structures for enhanced quantum two-photon sources

Luca Dal Negro, Yuyao Chen, Sean Gorsky +1

In this paper we propose a novel approach to enhance the efficiency of the two-photon spontaneous emission process that is driven by the multifractal optical mode density of photon…

quant-ph2021★ 65 cited

Thermalization of dilute impurities in one dimensional spin chains

Dries Sels, Anatoli Polkovnikov

We analyze a crossover between ergodic and non-ergodic regimes in an interacting spin chain with a dilute density of impurities, defined as spins with a strong local field. The dil…

quant-ph2021★ 40 cited

Concurrence Percolation in Quantum Networks

Xiangyi Meng, Jianxi Gao, Shlomo Havlin

Establishing long-distance quantum entanglement, i.e., entanglement transmission, in quantum networks (QN) is a key and timely challenge for developing efficient quantum communicat…

quant-ph2021★ 86 cited

Emergent hydrodynamics in a strongly interacting dipolar spin ensemble

Chong Zu, Francisco Machado, Bingtian Ye +12

Conventional wisdom holds that macroscopic classical phenomena naturally emerge from microscopic quantum laws. However, despite this mantra, building direct connections between the…

quant-ph2021★ 1 cited

Partial thermalisation of a two-state system coupled to a finite quantum bath

Philip JD Crowley, Anushya Chandran

The eigenstate thermalisation hypothesis (ETH) is a statistical characterisation of eigen-energies, eigenstates and matrix elements of local operators in thermalising quantum syste…

quant-ph2021★ 29 cited

Surpassing the Energy Resolution Limit with ferromagnetic torque sensors

Andrea Vinante, Chris Timberlake, Dmitry Budker +3

We discuss the fundamental noise limitations of a ferromagnetic torque sensor based on a levitated magnet in the tipping regime. We evaluate the optimal magnetic field resolution t…

quant-ph2021★ 26 cited

Quantum sensitivity limits of nuclear magnetic resonance experiments searching for new fundamental physics

Deniz Aybas, Hendrik Bekker, John W. Blanchard +7

Nuclear magnetic resonance is a promising experimental approach to search for ultra-light axion-like dark matter. Searches such as the cosmic axion spin-precession experiments (CAS…