Optimal entanglement-assisted electromagnetic sensing and communication in the presence of noise

• URL: http://arxiv.org/abs/2309.12629v2
• Date: Tue, 19 Dec 2023 13:55:23 GMT
• Title: Optimal entanglement-assisted electromagnetic sensing and communication in the presence of noise
• Authors: Haowei Shi, Bingzhi Zhang, Jeffrey H. Shapiro, Zheshen Zhang and Quntao Zhuang
• Abstract summary: This paper introduces the correlation-to-displacement receiver -- a new architecture comprised of a correlation-to-displacement converter, a programmable mode selector, and a coherent-state information extractor.
• Score: 0.3749861135832072
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: High time-bandwidth product signal and idler pulses comprised of independent identically distributed two-mode squeezed vacuum (TMSV) states are readily produced by spontaneous parametric downconversion. These pulses are virtually unique among entangled states in that they offer quantum performance advantages -- over their best classical-state competitors -- in scenarios whose loss and noise break their initial entanglement. Broadband TMSV states' quantum advantage derives from its signal and idler having a strongly nonclassical phase-sensitive cross correlation, which leads to information bearing signatures in lossy, noisy scenarios stronger than what can be obtained from classical-state systems of the same transmitted energy. Previous broadband TMSV receiver architectures focused on converting phase-sensitive cross correlation into phase-insensitive cross correlation, which can be measured in second-order interference. In general, however, these receivers fail to deliver broadband TMSV states' full quantum advantage, even if they are implemented with ideal equipment. This paper introduces the correlation-to-displacement receiver -- a new architecture comprised of a correlation-to-displacement converter, a programmable mode selector, and a coherent-state information extractor -- that can be configured to achieve quantum optimal performance in known sensing and communication protocols for which broadband TMSV provides quantum advantage that is robust against entanglement-breaking loss and noise.

Related papers

• Repeater-Based Quantum Communication Protocol: Maximizing Teleportation Fidelity with Minimal Entanglement [0.0]
  We propose a more efficient protocol for a certain class of noisy states in any intermediary segment. Our approach ensures enhanced teleportation fidelity even when the end-to-end state gets noisier.
  arXiv  Detail & Related papers  (2024-06-20T11:31:12Z)
• A superconducting quantum information processor with high qubit connectivity [0.0]
  Coupling of transmon qubits to resonators that serve as storage for information provides alternative routes for quantum computing. We propose an architecture that incorporates the four-wave mixing capabilities of the transmon into a chain of resonators coupled collectively by qubits in between.
  arXiv  Detail & Related papers  (2023-07-16T16:58:50Z)
• Autonomous coherence protection of a two-level system in a fluctuating environment [68.8204255655161]
  We re-examine a scheme originally intended to remove the effects of static Doppler broadening from an ensemble of non-interacting two-level systems (qubits) We demonstrate that this scheme is far more powerful and can also protect a single (or even an ensemble) qubit's energy levels from noise which depends on both time and space.
  arXiv  Detail & Related papers  (2023-02-08T01:44:30Z)
• Transceiver designs to attain the entanglement assisted communications capacity [1.6694381776724387]
  Pre-shared entanglement can significantly boost communication rates in the high thermal noise and low-brightness transmitter regime. We propose a pair of structured quantum transceiver designs that leverage continuous-variable pre-shared entanglement generated.
  arXiv  Detail & Related papers  (2022-08-16T22:37:20Z)
• Directional Josephson traveling-wave parametric amplifier via non-Hermitian topology [58.720142291102135]
  Low-noise microwave amplification is crucial for detecting weak signals in quantum technologies and radio astronomy. Current amplifiers do not satisfy all these requirements, severely limiting the scalability of superconducting quantum devices. Here, we demonstrate the feasibility of building a near-ideal quantum amplifier using a homogeneous Josephson junction array and the non-trivial topology of its dynamics.
  arXiv  Detail & Related papers  (2022-07-27T18:07:20Z)
• Fulfilling entanglement's optimal advantage via converting correlation to coherence [0.966840768820136]
  Entanglement boosts performance limits in sensing and communication. We propose a conversion module to capture and transform the quantum correlation to coherent quadrature displacement. Our module provides a paradigm of processing noisy quantum correlations for near-term implementation.
  arXiv  Detail & Related papers  (2022-07-14T02:02:52Z)
• Optimal quantum control via genetic algorithms for quantum state engineering in driven-resonator mediated networks [68.8204255655161]
  We employ a machine learning-enabled approach to quantum state engineering based on evolutionary algorithms. We consider a network of qubits -- encoded in the states of artificial atoms with no direct coupling -- interacting via a common single-mode driven microwave resonator. We observe high quantum fidelities and resilience to noise, despite the algorithm being trained in the ideal noise-free setting.
  arXiv  Detail & Related papers  (2022-06-29T14:34:00Z)
• Model-based Deep Learning Receiver Design for Rate-Splitting Multiple Access [65.21117658030235]
  This work proposes a novel design for a practical RSMA receiver based on model-based deep learning (MBDL) methods. The MBDL receiver is evaluated in terms of uncoded Symbol Error Rate (SER), throughput performance through Link-Level Simulations (LLS) and average training overhead. Results reveal that the MBDL outperforms by a significant margin the SIC receiver with imperfect CSIR.
  arXiv  Detail & Related papers  (2022-05-02T12:23:55Z)
• Towards fully-fledged quantum and classical communication over deployed fiber with up-conversion module [47.187609203210705]
  We propose and demonstrate a new method, based on up-conversion assisted receiver, for co-propagating classical light and QKD signals. Our proposal exhibits higher tolerance for noise in comparison to the standard receiver, thus enabling the distribution of secret keys in the condition of 4 dB-higher classical power.
  arXiv  Detail & Related papers  (2021-06-09T13:52:27Z)
• Composably secure data processing for Gaussian-modulated continuous variable quantum key distribution [58.720142291102135]
  Continuous-variable quantum key distribution (QKD) employs the quadratures of a bosonic mode to establish a secret key between two remote parties. We consider a protocol with homodyne detection in the general setting of composable finite-size security. In particular, we analyze the high signal-to-noise regime which requires the use of high-rate (non-binary) low-density parity check codes.
  arXiv  Detail & Related papers  (2021-03-30T18:02:55Z)
• Environment-assisted bosonic quantum communications [0.0]
  We consider a quantum relay which is used by two parties to perform several continuous-variable protocols of quantum communication. In the worst case scenario where bipartite entanglement is completely lost at the relay, we show that the various protocols can be reactivated by the assistance of classical (separable) correlations in the environment. Our findings are confirmed by a proof-of-principle experiment where we show, for the first time, that memory effects in the environment can drastically enhance the performance of a quantum relay.
  arXiv  Detail & Related papers  (2020-03-20T12:58:44Z)

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.