Evolution of two-mode quantum states under a dissipative environment: which quantum resource survives better, squeezing or entanglement?

• URL: http://arxiv.org/abs/2201.08060v1
• Date: Thu, 20 Jan 2022 08:56:00 GMT
• Title: Evolution of two-mode quantum states under a dissipative environment: which quantum resource survives better, squeezing or entanglement?
• Authors: Rishabh and Chandan Kumar and Geetu Narang and Arvind
• Abstract summary: We study the relative robustness of squeezing and entanglement under different dissipative environments. This can be used to enhance the performance of various quantum information processing protocols.
• Score: 5.434106457476772
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We explore the relative robustness of squeezing and entanglement (which are quantum resources interconvertible via passive optics) for two-mode Gaussian states under different dissipative environments. When the individual modes interact with identical local baths, entanglement and squeezing decay at the same rate. However, when only one of the modes interacts with a local bath, the comparative robustness of entanglement and squeezing depends on the initial squeezing of the state. Similarly, when the system interacts with a global bath, the robustness of entanglement and squeezing depends on the initial squeezing. Thus depending on the nature of dissipative environments and the initial squeezing of the state, one can select the more robust form of resource out of squeezing and entanglement to store quantumness. This can be used to effectively enhance the performance of various quantum information processing protocols based on continuous variable Gaussian states.

Related papers

• Creation of Two-Mode Squeezed States in Atomic Mechanical Oscillators [6.445506003176312]
  Two-mode squeezed states are entangled states with bipartite quantum correlations in continuous-variable systems. We experimentally demonstrate two-mode squeezed states by employing atoms in a two-dimensional optical lattice as quantum registers.
  arXiv  Detail & Related papers  (2023-11-09T07:13:07Z)
• Entanglement preservation in tripartite quantum systems under dephasing dynamics [0.0]
  We investigate the tripartite entanglement dynamics of pure and mixed states in the presence of a structured dephasing environment at finite temperature. We show that the robustness of the quantum system to decoherence is dependent on the distribution of entanglement. The sustainability of tripartite entanglement is shown to be enhanced significantly in presence of reservoir memory.
  arXiv  Detail & Related papers  (2023-11-09T06:19:08Z)
• Entanglement and localization in long-range quadratic Lindbladians [49.1574468325115]
  Signatures of localization have been observed in condensed matter and cold atomic systems. We propose a model of one-dimensional chain of non-interacting, spinless fermions coupled to a local ensemble of baths. We show that the steady state of the system undergoes a localization entanglement phase transition by tuning $p$ which remains stable in the presence of coherent hopping.
  arXiv  Detail & Related papers  (2023-03-13T12:45:25Z)
• Exploring entanglement resource in Si quantum dot systems with operational quasiprobability approach [0.9137554315375919]
  We characterize the quantum entanglement of the realistic two-qubit signals that are sensitive to charge noises. We employ the marginal operational quasiprobability (OQ) approach that allows negative values of the probability function if a given state is entangled.
  arXiv  Detail & Related papers  (2022-03-30T08:05:57Z)
• Unconventional mechanism of virtual-state population through dissipation [125.99533416395765]
  We report a phenomenon occurring in open quantum systems by which virtual states can acquire a sizable population in the long time limit. This means that the situation where the virtual state remains unpopulated can be metastable. We show how these results can be relevant for practical questions such as the generation of stable and metastable entangled states in dissipative systems of interacting qubits.
  arXiv  Detail & Related papers  (2022-02-24T17:09:43Z)
• Enhancing entanglement and total correlations dynamics via local unitaries [1.0159681653887238]
  Local unitaries provide an easy and accessible way to enhance quantum correlations in a variety of different experimental platforms. We show that the most robust states are not necessarily the ones imprinting the least information about themselves into the environment. We derive a general law relating the interplay between the total correlations in the system and environment with their mutual information built up over the noisy dynamics.
  arXiv  Detail & Related papers  (2021-08-18T20:12:34Z)
• Probing multipartite entanglement, coherence and quantum information preservation under classical Ornstein-Uhlenbeck noise [0.4215938932388722]
  We address entanglement, coherence, and information protection in a system of four non-interacting qubits coupled with classical environments. We show that quantum information preserved by the four qubit state is more dependent on the coherence than the entanglement.
  arXiv  Detail & Related papers  (2021-07-23T14:08:31Z)
• Superposition of two-mode squeezed states for quantum information processing and quantum sensing [55.41644538483948]
  We investigate superpositions of two-mode squeezed states (TMSSs) TMSSs have potential applications to quantum information processing and quantum sensing.
  arXiv  Detail & Related papers  (2021-02-01T18:09:01Z)
• Bose-Einstein condensate soliton qubit states for metrological applications [58.720142291102135]
  We propose novel quantum metrology applications with two soliton qubit states. Phase space analysis, in terms of population imbalance - phase difference variables, is also performed to demonstrate macroscopic quantum self-trapping regimes.
  arXiv  Detail & Related papers  (2020-11-26T09:05:06Z)
• Gaussian conversion protocols for cubic phase state generation [104.23865519192793]
  Universal quantum computing with continuous variables requires non-Gaussian resources. The cubic phase state is a non-Gaussian state whose experimental implementation has so far remained elusive. We introduce two protocols that allow for the conversion of a non-Gaussian state to a cubic phase state.
  arXiv  Detail & Related papers  (2020-07-07T09:19:49Z)
• Einselection from incompatible decoherence channels [62.997667081978825]
  We analyze an open quantum dynamics inspired by CQED experiments with two non-commuting Lindblad operators. We show that Fock states remain the most robust states to decoherence up to a critical coupling.
  arXiv  Detail & Related papers  (2020-01-29T14:15:19Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.