Steering nonlocality in high-speed telecommunication system without detection loophole

• URL: http://arxiv.org/abs/2404.03228v3
• Date: Mon, 24 Feb 2025 05:44:32 GMT
• Title: Steering nonlocality in high-speed telecommunication system without detection loophole
• Authors: Qiang Zeng, Huihong Yuan, Haoyang Wang, Lai Zhou, Zhiliang Yuan,
• Abstract summary: We report the first time-bin entangled detection-loophole-free steering nonlocality demonstration in a fully chip-fiber telecommunication system.<n>Our setup presents an immediate platform for exploring applications based on steering nonlocality, especially for quantum communication.
• Score: 4.695669579640979
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Nonlocal correlation represents the key feature of quantum mechanics, and is an exploitable resource in quantum information processing. However, the loophole issues and the associated applicability compromises hamper the practical applications. We report the first time-bin entangled detection-loophole-free steering nonlocality demonstration in a fully chip-fiber telecommunication system, with an ultra-fast measurement switching rate (1.25~GHz). In this endeavor, we propose the phase-encoding measurement scheme to adapt the system to time-bin degree of freedom, and design and fabricate a low-loss silicon chip for efficient entanglement generation. An asymmetric configuration is introduced to mimic the active measurement implementation at the steering party thus bypassing the phase modulation loss. Consequently, we build a fiber-optic setup that can overcome the detection efficiency required by conclusive quantum steering with multiple actively switched measurement settings. Our setup presents an immediate platform for exploring applications based on steering nonlocality, especially for quantum communication.

Related papers

• Information-Scrambling-Enhanced Quantum Sensing Beyond the Standard Quantum Limit [24.972499920814034]
  We experimentally demonstrate a scalable, scrambling-enhanced quantum sensing protocol, implemented on a cross-shaped superconducting quantum processor.<n>By harnessing quantum information scrambling, the protocol converts local interactions into delocalized metrologically useful correlations, enabling robust signal amplification.<n>This work demonstrates a readily scalable path toward practical quantum sensing advantages with prevalent experimental platforms.
  arXiv  Detail & Related papers  (2025-12-24T13:05:34Z)
• CLASS: A Controller-Centric Layout Synthesizer for Dynamic Quantum Circuits [58.16162138294308]
  CLASS is a controller-centric layout synthesizer designed to reduce inter-controller communication latency in a distributed control system.<n> Evaluations demonstrate that CLASS effectively reduces communication latency by up to 100% with only a 2.10% average increase in the number of additional operations.
  arXiv  Detail & Related papers  (2025-09-19T08:11:55Z)
• Implementing a Universal Set of Geometric Quantum Gates through Dressed-State assisted STA [39.27725073249277]
  We analyze the implementation of single-qubit gates in a two-level system driven by a microwave field.<n>We show how the dynamical phase can be canceled to obtain purely geometric operations.<n>We extend the protocol to construct non two-qubit gates, highlighting its feasibility for scalable quantum information processing.
  arXiv  Detail & Related papers  (2025-09-10T16:14:34Z)
• Teleportation-based Speed Meter for Precision Measurement [11.118338267742097]
  We propose a quantum teleportation-based speed meter for interferometric displacement sensing. Two equivalent implementations are presented that reduce quantum radiation pressure noise and surpass the standard quantum limit of measuring displacement. This approach offers a new path to back-action evasion enabled by quantum entanglement.
  arXiv  Detail & Related papers  (2025-04-25T06:29:24Z)
• Speeding Up Quantum Measurement Using Space-Time Trade-Off [0.0]
  We present a scheme for speeding up quantum measurement. The scheme builds on previous protocols that entangle the system to be measured with ancillary systems. We verify this scheme is robust against experimental imperfections through numerical modelling of gate noise and readout errors.
  arXiv  Detail & Related papers  (2024-07-24T15:09:35Z)
• Parametrically controlled chiral interface for superconducting quantum devices [0.0]
  Nonreciprocal microwave routing plays a crucial role for measuring quantum circuits. Ferrite-based circulators suffer from excess loss, a large footprint, and fixed directionality. Here, we report the design and experimental realization of a minimal controllable directional interface.
  arXiv  Detail & Related papers  (2024-05-23T22:15:40Z)
• Reducing Mid-Circuit Measurements via Probabilistic Circuits [0.13108652488669736]
  Mid-circuit measurements and measurement-controlled gates are supported by an increasing number of quantum hardware platforms. This work presents a static circuit optimization that can substitute some of these measurements with an equivalent circuit with randomized gate applications.
  arXiv  Detail & Related papers  (2024-05-22T15:33:19Z)
• Optimal control in large open quantum systems: the case of transmon readout and reset [44.99833362998488]
  We present a framework that combines the adjoint-state method together with reverse-time backpropagation to solve prohibitively large open-system quantum control problems. We apply this framework to optimize two inherently dissipative operations in superconducting qubits. Our results show that while standard pulses for dispersive readout are nearly optimal, adding a transmon drive during the protocol can yield 2x improvements in fidelity and duration.
  arXiv  Detail & Related papers  (2024-03-21T18:12:51Z)
• System Characterization of Dispersive Readout in Superconducting Qubits [37.940693612514984]
  We introduce a single protocol to measure the dispersive shift, resonator linewidth, and drive power used in the dispersive readout of superconducting qubits. We find that the resonator linewidth is poorly controlled with a factor of 2 between the maximum and minimum measured values. We also introduce a protocol for measuring the readout system efficiency using the same power levels as are used in typical qubit readout.
  arXiv  Detail & Related papers  (2024-02-01T08:15:16Z)
• Fast Flux-Activated Leakage Reduction for Superconducting Quantum Circuits [84.60542868688235]
  leakage out of the computational subspace arising from the multi-level structure of qubit implementations. We present a resource-efficient universal leakage reduction unit for superconducting qubits using parametric flux modulation. We demonstrate that using the leakage reduction unit in repeated weight-two stabilizer measurements reduces the total number of detected errors in a scalable fashion.
  arXiv  Detail & Related papers  (2023-09-13T16:21:32Z)
• Near-Term Distributed Quantum Computation using Mean-Field Corrections and Auxiliary Qubits [77.04894470683776]
  We propose near-term distributed quantum computing that involve limited information transfer and conservative entanglement production. We build upon these concepts to produce an approximate circuit-cutting technique for the fragmented pre-training of variational quantum algorithms.
  arXiv  Detail & Related papers  (2023-09-11T18:00:00Z)
• Harnessing high-dimensional temporal entanglement using limited interferometric setups [41.94295877935867]
  We develop the first complete analysis of high-dimensional entanglement in the polarization-time-domain. We show how to efficiently certify relevant density matrix elements and security parameters for Quantum Key Distribution. We propose a novel setup that can further enhance the noise resistance of free-space quantum communication.
  arXiv  Detail & Related papers  (2023-08-08T17:44:43Z)
• Semi-device independent nonlocality certification for near-term quantum networks [46.37108901286964]
  Bell tests are the most rigorous method for verifying entanglement in quantum networks. If there is any signaling between the parties, then the violation of Bell inequalities can no longer be used. We propose a semi-device independent protocol that allows us to numerically correct for effects of correlations in experimental probability distributions.
  arXiv  Detail & Related papers  (2023-05-23T14:39:08Z)
• Measurement-induced entanglement and teleportation on a noisy quantum processor [105.44548669906976]
  We investigate measurement-induced quantum information phases on up to 70 superconducting qubits. We use a duality mapping, to avoid mid-circuit measurement and access different manifestations of the underlying phases. Our work demonstrates an approach to realize measurement-induced physics at scales that are at the limits of current NISQ processors.
  arXiv  Detail & Related papers  (2023-03-08T18:41:53Z)
• Hybrid Gate-Pulse Model for Variational Quantum Algorithms [33.73469431747376]
  Current quantum programs are mostly compiled on the gate-level, where quantum circuits are composed of quantum gates. pulse-level optimization has gained more attention from researchers due to their advantages in terms of circuit duration. We present a hybrid gate-pulse model that can mitigate these problems.
  arXiv  Detail & Related papers  (2022-12-01T17:06:35Z)
• Noise-Robust and Loss-Tolerant Quantum Steering with Qudits [0.0]
  We introduce a noise-robust and loss-tolerant test of quantum steering designed for single detector measurements. We experimentally demonstrate detection loophole-free quantum steering in 53 dimensions through simultaneous loss and noise conditions. By surpassing the constraints imposed upon the device-independent distribution of entanglement, our loss-tolerant, noise-robust, and resource-efficient demonstration of quantum steering proves itself a critical ingredient for making device-independent quantum communication over long distances a reality.
  arXiv  Detail & Related papers  (2022-02-18T16:53:28Z)
• Dispersive qubit readout with machine learning [0.08399688944263842]
  Open quantum systems can undergo dissipative phase transitions, and their critical behavior can be exploited in sensing applications. A recently introduced measurement protocol uses the parametric (two-photon driven) Kerr resonator's driven-dissipative phase transition to reach single-qubit detection fidelity of 99.9%. We use machine learning-based classification algorithms to extract information from this critical dynamics.
  arXiv  Detail & Related papers  (2021-12-10T04:25:43Z)
• Performance of teleportation-based error correction circuits for bosonic codes with noisy measurements [58.720142291102135]
  We analyze the error-correction capabilities of rotation-symmetric codes using a teleportation-based error-correction circuit. We find that with the currently achievable measurement efficiencies in microwave optics, bosonic rotation codes undergo a substantial decrease in their break-even potential.
  arXiv  Detail & Related papers  (2021-08-02T16:12:13Z)
• Fault-tolerant parity readout on a shuttling-based trapped-ion quantum computer [64.47265213752996]
  We experimentally demonstrate a fault-tolerant weight-4 parity check measurement scheme. We achieve a flag-conditioned parity measurement single-shot fidelity of 93.2(2)%. The scheme is an essential building block in a broad class of stabilizer quantum error correction protocols.
  arXiv  Detail & Related papers  (2021-07-13T20:08:04Z)
• 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)
• Efficient and robust certification of genuine multipartite entanglement in noisy quantum error correction circuits [58.720142291102135]
  We introduce a conditional witnessing technique to certify genuine multipartite entanglement (GME) We prove that the detection of entanglement in a linear number of bipartitions by a number of measurements scales linearly, suffices to certify GME. We apply our method to the noisy readout of stabilizer operators of the distance-three topological color code and its flag-based fault-tolerant version.
  arXiv  Detail & Related papers  (2020-10-06T18:00:07Z)
• Two-way covert quantum communication in the microwave regime [0.0]
  Quantum communication addresses the problem of exchanging information across macroscopic distances. We advance a new paradigm for secure quantum communication by combining backscattering concepts with covert communication in the microwave regime. This work makes a decisive step toward implementing secure quantum communication concepts in the previously uncharted $1$-$10$ GHz frequency range.
  arXiv  Detail & Related papers  (2020-04-15T16:36:59Z)

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.