Entangling independent particles by path identity

• URL: http://arxiv.org/abs/2412.03022v1
• Date: Wed, 04 Dec 2024 04:27:28 GMT
• Title: Entangling independent particles by path identity
• Authors: Kai Wang, Zhaohua Hou, Kaiyi Qian, Leizhen Chen, Mario Krenn, Shining Zhu, Xiao-song Ma,
• Abstract summary: We show that independent particles can be entangled without the need for direct interaction, prior established entanglement, or Bell-state measurements.<n>In addition to its foundational interest, we show that this technique might lower the resource requirements in quantum networks.
• Score: 4.644036541394394
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum entanglement -- correlations of particles that are stronger than any classical analogue -- is the basis for research on the foundations of quantum mechanics and for practical applications such as quantum networks. Traditionally, entanglement is achieved through local interactions or via entanglement swapping, where entanglement at a distance is generated through previously established entanglement and Bell-state measurements. However, the precise requirements enabling the generation of quantum entanglement without traditional local interactions remain less explored. Here we demonstrate that independent particles can be entangled without the need for direct interaction, prior established entanglement, or Bell-state measurements, by exploiting the indistinguishability of the origins of photon pairs. Our demonstrations challenge the long-standing belief that the prior generation and measurement of entanglement are necessary prerequisites for generating entanglement between independent particles that do not share a common past. In addition to its foundational interest, we show that this technique might lower the resource requirements in quantum networks, by reducing the complexity of photon sources and the overhead photon numbers.

Related papers

• Operationally classical simulation of quantum states [41.94295877935867]
  A classical state-preparation device cannot generate superpositions and hence its emitted states must commute. We show that no such simulation exists, thereby certifying quantum coherence. Our approach is a possible avenue to understand how and to what extent quantum states defy generic models based on classical devices.
  arXiv  Detail & Related papers  (2025-02-03T15:25:03Z)
• Experimental Test of Nonlocality Limits from Relativistic Independence [0.0]
  We show the existence of a fundamental limit on the extent of quantum correlations. Our results shed light on the profound role of uncertainty in both enabling and balancing them.
  arXiv  Detail & Related papers  (2025-01-10T23:29:00Z)
• Realization of strongly-interacting Meissner phases in large bosonic flux ladders [36.136619420474766]
  We experimentally realize the strongly-interacting Mott-Meissner phase in large-scale bosonic flux ladders with 48 sites at half filling. Our results demonstrate the feasibility of scaling periodically driven quantum systems to large, strongly correlated phases.
  arXiv  Detail & Related papers  (2024-12-12T17:27:49Z)
• Computational supremacy in quantum simulation [22.596358764113624]
  We show that superconducting quantum annealing processors can generate samples in close agreement with solutions of the Schr"odinger equation. We conclude that no known approach can achieve the same accuracy as the quantum annealer within a reasonable timeframe.
  arXiv  Detail & Related papers  (2024-03-01T19:00:04Z)
• Non-adiabatic holonomies as photonic quantum gates [36.136619420474766]
  We present the quantum-optical realization of non-adiabatic holonomies that can be used as single-qubit quantum gates. The inherent non-adiabaticity of the structures paves the way for unprecedented miniaturization.
  arXiv  Detail & Related papers  (2024-01-08T16:44:45Z)
• Universal shot-noise limit for quantum metrology with local Hamiltonians [2.624076371876711]
  We derive a universal and fundamental bound for the growth of the quantum Fisher information. We prove that the precision cannot surpass the shot noise limit at all times in locally interacting quantum systems.
  arXiv  Detail & Related papers  (2023-08-07T16:13:01Z)
• Coherently induced quantum correlation in a delayed-choice scheme [0.0]
  Quantum entanglement is a unique quantum feature that cannot be obtained by classical physics. Here, a coherence manipulation is presented to excite polarization-path correlation using Poisson-distributed coherent photons. As a result, the nonlocal quantum feature is now coherently understood in a deterministic way.
  arXiv  Detail & Related papers  (2023-03-27T09:53:42Z)
• Coherent control of a high-orbital hole in a semiconductor quantum dot [21.05348937863074]
  coherent manipulation of single charge carriers in quantum dots is limited mainly to their lowest orbital states. We demonstrate an all-optical method to control high-orbital states of a hole via stimulated Auger process. Our work opens new possibilities for understanding the fundamental properties of high-orbital states in quantum emitters.
  arXiv  Detail & Related papers  (2022-12-21T03:49:46Z)
• Non-Abelian braiding of graph vertices in a superconducting processor [144.97755321680464]
  Indistinguishability of particles is a fundamental principle of quantum mechanics. braiding of non-Abelian anyons causes rotations in a space of degenerate wavefunctions. We experimentally verify the fusion rules of the anyons and braid them to realize their statistics.
  arXiv  Detail & Related papers  (2022-10-19T02:28:44Z)
• Deterministic quantum correlation between coherently paired photons acting on a beam splitter [0.0]
  We study the quantum natures of paired photons acting on a beam splitter, where mutual coherence plays a major role. Unlike current common understanding on anticorrelation, bipartite entanglement between paired photons does not have to be probabilistic or post-selected.
  arXiv  Detail & Related papers  (2021-08-21T23:24:18Z)
• Single-photon nonlocality in quantum networks [55.41644538483948]
  We show that the nonlocality of single-photon entangled states can nevertheless be revealed in a quantum network made only of beamsplitters and photodetectors. Our results show that single-photon entanglement may constitute a promising solution to generate genuine network-nonlocal correlations useful for Bell-based quantum information protocols.
  arXiv  Detail & Related papers  (2021-08-03T20:13:24Z)
• Quantum Causal Inference in the Presence of Hidden Common Causes: an Entropic Approach [34.77250498401055]
  We put forth a new theoretical framework for merging quantum information science and causal inference by exploiting entropic principles. We apply our proposed framework to an experimentally relevant scenario of identifying message senders on quantum noisy links. This approach can lay the foundations of identifying originators of malicious activity on future multi-node quantum networks.
  arXiv  Detail & Related papers  (2021-04-24T22:45:50Z)
• Experimental quantum phase discrimination enhanced by controllable indistinguishability-based coherence [13.745478068219699]
  Coherence emerges in a fundamentally different way for nonidentical and identical particles. We experimentally demonstrate this additional contribution to quantum coherence. Our experiment proves that independent indistinguishable particles can supply a controllable resource of coherence.
  arXiv  Detail & Related papers  (2021-03-27T03:50:03Z)
• Non-equilibrium stationary states of quantum non-Hermitian lattice models [68.8204255655161]
  We show how generic non-Hermitian tight-binding lattice models can be realized in an unconditional, quantum-mechanically consistent manner. We focus on the quantum steady states of such models for both fermionic and bosonic systems.
  arXiv  Detail & Related papers  (2021-03-02T18:56:44Z)

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.