Entanglement-Enhanced Optical Atomic Clocks

• URL: http://arxiv.org/abs/2209.00471v3
• Date: Tue, 20 Sep 2022 13:08:23 GMT
• Title: Entanglement-Enhanced Optical Atomic Clocks
• Authors: Simone Colombo, Edwin Pedrozo-Pe\~nafiel, Vladan Vuleti\'c
• Abstract summary: We describe the commonly used experimental methods to create many-body entangled states. We focus on the potential of applying quantum entanglement to state-of-the-art optical atomic clocks.
• Score: 0.8250374560598496
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recent developments in atomic physics have enabled the experimental generation of many-body entangled states to boost the performance of quantum sensors beyond the Standard Quantum Limit (SQL). This limit is imposed by the inherent projection noise of a quantum measurement. In this perspective article, we describe the commonly used experimental methods to create many-body entangled states to operate quantum sensors beyond the SQL. In particular, we focus on the potential of applying quantum entanglement to state-of-the-art optical atomic clocks. In addition, we present recently developed time-reversal protocols that make use of complex states with high quantum Fisher information without requiring sub-SQL measurement resolution. We discuss the prospects for reaching near-Heisenberg limited quantum metrology based on such protocols.

Related papers

• Bosonic Entanglement and Quantum Sensing from Energy Transfer in two-tone Floquet Systems [1.2499537119440245]
  Quantum-enhanced sensors, which surpass the standard quantum limit (circuit) and approach the fundamental precision limits dictated by quantum mechanics, are finding applications across a wide range of scientific fields. We introduce entanglement and preserve quantum information among many particles in a sensing circuit. We propose a superconducting-entangled sensor in the microwave regime, highlighting its potential for practical applications in high-precision measurements.
  arXiv  Detail & Related papers  (2024-10-15T00:48:01Z)
• Entanglement-enhanced quantum metrology: from standard quantum limit to Heisenberg limit [0.0]
  Entanglement-enhanced quantum metrology explores the utilization of quantum entanglement to enhance measurement precision. The rapid advancement of techniques for quantum manipulation and detection has enabled the generation, manipulation, and detection of multi-particle entangled states.
  arXiv  Detail & Related papers  (2024-02-05T22:46:38Z)
• Quantum data learning for quantum simulations in high-energy physics [55.41644538483948]
  We explore the applicability of quantum-data learning to practical problems in high-energy physics. We make use of ansatz based on quantum convolutional neural networks and numerically show that it is capable of recognizing quantum phases of ground states. The observation of non-trivial learning properties demonstrated in these benchmarks will motivate further exploration of the quantum-data learning architecture in high-energy physics.
  arXiv  Detail & Related papers  (2023-06-29T18:00:01Z)
• Quantum Optical Memory for Entanglement Distribution [52.77024349608834]
  Entanglement of quantum states over long distances can empower quantum computing, quantum communications, and quantum sensing. Over the past two decades, quantum optical memories with high fidelity, high efficiencies, long storage times, and promising multiplexing capabilities have been developed.
  arXiv  Detail & Related papers  (2023-04-19T03:18:51Z)
• 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)
• Probing finite-temperature observables in quantum simulators of spin systems with short-time dynamics [62.997667081978825]
  We show how finite-temperature observables can be obtained with an algorithm motivated from the Jarzynski equality. We show that a finite temperature phase transition in the long-range transverse field Ising model can be characterized in trapped ion quantum simulators.
  arXiv  Detail & Related papers  (2022-06-03T18:00:02Z)
• Experimental quantum advantage with quantum coupon collector [10.81907025584207]
  We introduce and analyse a quantum coupon collector protocol by employing coherent states and simple linear optical elements. We show that our protocol can significantly reduce the number of samples needed to learn a specific set compared with the classical limit of the coupon collector problem. We also discuss the potential values and expansions of the quantum coupon collector by constructing a quantum blind box game.
  arXiv  Detail & Related papers  (2021-12-15T04:54:47Z)
• Time-Reversal-Based Quantum Metrology with Many-Body Entangled States [0.5911087507716212]
  In quantum metrology, entanglement represents a valuable resource that can be used to overcome the Standard Quantum Limit () that bounds the precision of sensors that operate with independent particles. We implement an effective time-reversal protocol through a controlled sign change in an optically engineered many-body Hamiltonian. Using a system of 350 neutral $171$Yb atoms, this signal amplification through time-reversed interaction protocol achieves the largest sensitivity improvement beyond the Standard Quantum Limit.
  arXiv  Detail & Related papers  (2021-06-07T16:19:09Z)
• Preparing random states and benchmarking with many-body quantum chaos [48.044162981804526]
  We show how to predict and experimentally observe the emergence of random state ensembles naturally under time-independent Hamiltonian dynamics. The observed random ensembles emerge from projective measurements and are intimately linked to universal correlations built up between subsystems of a larger quantum system. Our work has implications for understanding randomness in quantum dynamics, and enables applications of this concept in a wider context.
  arXiv  Detail & Related papers  (2021-03-05T08:32:43Z)
• Demonstration of quantum advantage by a joint detection receiver for optical communications using quantum belief propagation on a trapped-ion device [0.7758302353877525]
  We present an experimental realization of a quantum joint detection receiver for binary phase shift keying codewords of a 3-bit linear tree code. The receiver, translated to a quantum circuit, was experimentally implemented on a trapped-ion device. We provide an experimental framework that surpasses the quantum limit on the minimum average decoding error probability.
  arXiv  Detail & Related papers  (2021-02-25T18:05:31Z)
• Imaginary Time Propagation on a Quantum Chip [50.591267188664666]
  Evolution in imaginary time is a prominent technique for finding the ground state of quantum many-body systems. We propose an algorithm to implement imaginary time propagation on a quantum computer.
  arXiv  Detail & Related papers  (2021-02-24T12:48:00Z)

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.