Results 21 to 30 of about 86,028 (215)
Divergences in open quantum systems [PDF]
Journal of High Energy Physics, 2018 AbstractWe show that for cubic scalar field theories in five and more spacetime dimensions, and for theT= 0 limit of the Caldeira-Leggett model, the quantum master equation for long-wavelength modes initially unentangled from short-distance modes, and at second order in perturbation theory, contains divergences in the non-Hamiltonian terms.
Cesar A. Agón +3 more
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Quantum error correction under numerically exact open-quantum-system dynamics
Physical Review Research, 2023 The known quantum error-correcting codes are typically built on approximative open-quantum-system models such as Born-Markov master equations. However, it is an open question how such codes perform in actual physical systems that, to some extent ...
Aravind P. Babu +5 more
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Tunable Non-Markovianity for Bosonic Quantum Memristors
Entropy, 2023 We studied the tunable control of the non-Markovianity of a bosonic mode due to its coupling to a set of auxiliary qubits, both embedded in a thermal reservoir. Specifically, we considered a single cavity mode coupled to auxiliary qubits described by the
Jia-Liang Tang +3 more
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Dissipation-induced Liouville-Majorana modes in open quantum system
Physical Review Research, 2023 In open quantum systems, topological edge states rapidly lose coherence, making them unsuitable for topological quantum computation and quantum memory.
Xing-Shuo Xu +3 more
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Two-Unitary Decomposition Algorithm and Open Quantum System Simulation [PDF]
Quantum, 2023 Simulating general quantum processes that describe realistic interactions of quantum systems following a non-unitary evolution is challenging for conventional quantum computers that directly implement unitary gates.
Nishchay Suri +5 more
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Phase transitions in the classical simulability of open quantum systems
Scientific Reports, 2023 We introduce a Langevin unravelling of the density matrix evolution of an open quantum system over matrix product states, which we term the time-dependent variational principle-Langevin equation.
F. Azad +3 more
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Identifiability of open quantum systems [PDF]
Physical Review A, 2014 We provide a general framework for the identification of open quantum systems. By looking at the input-output behavior, we try to identify the system inside a black box in which some Markovian time-evolution takes place. Due to the generally irreversible nature of the dynamics, it is difficult to assure full controllability over the system.
Daniel Burgarth, Kazuya Yuasa
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Resonances in open quantum systems [PDF]
Physical Review A, 2017 Title of the paper is changed. The Introduction is broaden. The difference of the non-Hermitian formalism for the description of open quantum systems in our paper to the description of PT-symmetric systems is underlined. Paper published: Phys.Rev.A 95, 022117 (2017)
Eleuch, H., Rotter, I.
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Assisted quantum simulation of open quantum systems
iScience, 2023 Universal quantum algorithms (UQA) implemented on fault-tolerant quantum computers are expected to achieve an exponential speedup over classical counterparts. However, the deep quantum circuits makes the UQA implausible in the current era. With only the noisy intermediate-scale quantum (NISQ) devices in hand, we introduce the quantum-assisted quantum ...
Jin-Min Liang +3 more
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Commutation simulator for open quantum dynamics
New Journal of Physics, 2023 Recent progress in quantum simulation and algorithms has demonstrated a rapid expansion in capabilities. The search continues for new techniques and applications to exploit quantum advantage.
Jaewoo Joo, Timothy P Spiller
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