Entanglement-induced collective many-body interference
- URL: http://arxiv.org/abs/2310.08630v3
- Date: Sun, 30 Jun 2024 10:41:43 GMT
- Title: Entanglement-induced collective many-body interference
- Authors: Tommaso Faleo, Eric Brunner, Jonathan W. Webb, Alexander Pickston, Joseph Ho, Gregor Weihs, Andreas Buchleitner, Christoph Dittel, Gabriel Dufour, Alessandro Fedrizzi, Robert Keil,
- Abstract summary: We propose an interferometric setting through which N-particle interference can be observed, while any interference of lower orders is strictly suppressed.
We experimentally demonstrate this effect in a four-photon interferometer, where the interference is nonlocal, in principle.
A joint detection of all four photons identifies a high-visibility interference pattern varying as a function of their collective four-particle phase, a genuine four-body property.
- Score: 62.22849132943891
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Entanglement and interference are both hallmark effects of quantum physics. Particularly rich dynamics arise when multiple (at least partially) indistinguishable particles are subjected to either of these phenomena. By combining both entanglement and many-particle interference, we propose an interferometric setting through which N-particle interference can be observed, while any interference of lower orders is strictly suppressed. We experimentally demonstrate this effect in a four-photon interferometer, where the interference is nonlocal, in principle, as only pairs of photons interfere at two separate and independent beam splitters. A joint detection of all four photons identifies a high-visibility interference pattern varying as a function of their collective four-particle phase, a genuine four-body property.
Related papers
- Dissipative stabilization of maximal entanglement between non-identical
emitters via two-photon excitation [49.1574468325115]
Two non-identical quantum emitters, when placed within a cavity and coherently excited at the two-photon resonance, can reach stationary states of nearly maximal entanglement.
We show that this mechanism is merely one among a complex family of phenomena that can generate both stationary and metastable entanglement when driving the emitters at the two-photon resonance.
arXiv Detail & Related papers (2023-06-09T16:49:55Z) - Distinguishability and mixedness in quantum interference [1.2885809002769635]
We study the impact of distinguishability and mixedness -- two fundamental properties of quantum states -- on quantum interference.
We show that these can influence the interference of multiple particles in different ways, leading to effects that cannot be observed in the interference of two particles alone.
arXiv Detail & Related papers (2022-01-12T19:08:45Z) - Characterization of Two-Particle Interference by Complementarity [0.0]
Bohr's Complementarity Principle is formulated in terms of the distinguishability of various paths a quanton can take, and the measure of the interference it produces.
The Hong-Ou-Mandel (HOM) effect and the Hanbury-Brown-Twiss (HBT) effect are two well known examples.
Two-particle interference is not as easy to define as its single particle counterpart, and the realization that it involves interference of two-particle amplitudes came much later.
arXiv Detail & Related papers (2022-01-12T16:43:05Z) - Multiphoton non-local quantum interference controlled by an undetected
photon [3.316485412174328]
Multipartite generalization of single-quanta interference creates entanglement, the coherent superposition of states shared by several quanta.
Entanglement is typically considered to be essential for creating non-local correlations, manifested by multipartite interference.
We show that this is not the case and demonstrate multiphoton non-local quantum interference without entanglement of any intrinsic properties of the photons.
arXiv Detail & Related papers (2021-12-22T04:07:54Z) - Quantum asymmetry and noisy multi-mode interferometry [55.41644538483948]
Quantum asymmetry is a physical resource which coincides with the amount of coherence between the eigenspaces of a generator.
We show that the asymmetry may emphincrease as a result of a emphdecrease of coherence inside a degenerate subspace.
arXiv Detail & Related papers (2021-07-23T07:30:57Z) - Observation-dependent suppression and enhancement of two-photon
coincidences by tailored losses [68.8204255655161]
Hong-Ou-Mandel (HOM) effect can lead to a perfect suppression of two-particle coincidences between the output ports of a balanced beam splitter.
In this work, we demonstrate experimentally that the two-particle coincidence statistics of two bosons can instead be seamlessly tuned to substantial enhancement.
Our findings reveal a new approach to harnessing non-Hermitian settings for the manipulation of multi-particle quantum states.
arXiv Detail & Related papers (2021-05-12T06:47:35Z) - Symmetry allows for distinguishability in totally destructive
many-particle interference [52.77024349608834]
We investigate, in a four photon interference experiment in a laser-written waveguide structure, how symmetries control the suppression of many-body output events of a $J_x$ unitary.
We show that totally destructive interference does not require mutual indistinguishability between all, but only between symmetrically paired particles.
arXiv Detail & Related papers (2021-02-19T16:37:19Z) - Higher-order interference between multiple quantum particles interacting
nonlinearly [1.0323063834827415]
We show that quantum mechanics in fact allows for interference of arbitrarily high order.
These examples are all perfectly described by quantum theory, and yet exhibit higher-order interference based on multiple particles interacting nonlinearly.
arXiv Detail & Related papers (2020-03-24T18:06:24Z) - Quantum-Clustered Two-Photon Walks [68.8204255655161]
We demonstrate a previously unknown two-photon effect in a discrete-time quantum walk.
Two identical bosons with no mutual interactions can remain clustered together.
The two photons move in the same direction at each step due to a two-photon quantum interference phenomenon.
arXiv Detail & Related papers (2020-03-12T17:02:35Z) - Interfering distinguishable photons [0.0]
It is assumed that distinguishing information in the preparation, evolution or measurement of a system is sufficient to destroy interference.
For more than three independent quantum particles, distinguishability of the prepared states is not a sufficient condition for multiparticle interference to disappear.
arXiv Detail & Related papers (2020-01-22T16:25:12Z)
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.