Delayed-choice quantum erasers and the Einstein-Podolsky-Rosen paradox

• URL: http://arxiv.org/abs/2210.11375v2
• Date: Sun, 30 Oct 2022 06:40:32 GMT
• Title: Delayed-choice quantum erasers and the Einstein-Podolsky-Rosen paradox
• Authors: Dah-Wei Chiou
• Abstract summary: We discuss the effect of quantum erasure on the Einstein-Podolsky-Rosen-Bohm experiment. The quantum eraser experiments can be classified into two major categories: the entanglement quantum eraser and the Scully-Dr"uhl-type quantum eraser. In the Scully-Dr"uhl-type quantum eraser, the statement that the which-way information can be influenced by the delayed-choice measurement is not purely a consequence of counterfactual reasoning but bears some factual significance.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Considering the delayed-choice quantum eraser using a Mach-Zehnder interferometer with a nonsymmetric beam splitter, we explicitly demonstrate that it shares exactly the same formal structure with the Einstein-Podolsky-Rosen-Bohm (EPR-Bohm) experiment. Therefore, the effect of quantum erasure can be understood in terms of the standard EPR correlation. Nevertheless, the quantum eraser still raises a conceptual issue beyond the standard EPR paradox, if counterfactual reasoning is taken into account. Furthermore, the quantum eraser experiments can be classified into two major categories: the entanglement quantum eraser and the Scully-Dr\"uhl-type quantum eraser. These two types are formally equivalent to each other, but conceptually the latter presents a "mystery" more prominent than the former. In the Scully-Dr\"uhl-type quantum eraser, the statement that the which-way information can be influenced by the delayed-choice measurement is not purely a consequence of counterfactual reasoning but bears some factual significance. Accordingly, it makes good sense to say that the "record" of the which-way information is "erased" if the potentiality to yield a conclusive outcome that discriminates the record is eliminated by the delayed-choice measurement. We also reconsider the quantum eraser in the many-worlds interpretation (MWI), making clear the conceptual merits and demerits of the MWI.

Related papers

• Realizing fracton order from long-range quantum entanglement in programmable Rydberg atom arrays [45.19832622389592]
  Storing quantum information requires battling quantum decoherence, which results in a loss of information over time. To achieve error-resistant quantum memory, one would like to store the information in a quantum superposition of degenerate states engineered in such a way that local sources of noise cannot change one state into another. We show that this platform also allows to detect and correct certain types of errors en route to the goal of true error-resistant quantum memory.
  arXiv  Detail & Related papers  (2024-07-08T12:46:08Z)
• Embezzling entanglement from quantum fields [41.94295877935867]
  Embezzlement of entanglement refers to the counterintuitive possibility of extracting entangled quantum states from a reference state of an auxiliary system. We uncover a deep connection between the operational task of embezzling entanglement and the mathematical classification of von Neumann algebras.
  arXiv  Detail & Related papers  (2024-01-14T13:58:32Z)
• Coherence interpretation of the delayed-choice quantum eraser [12.507208769851653]
  We experimentally demonstrate the violation of the cause-effect relation using coherent photons for the quantum eraser. The observed quantum eraser is coherently interpreted to seek the origin of the cause-effect violation.
  arXiv  Detail & Related papers  (2022-02-13T00:28:22Z)
• Quantum indistinguishability through exchangeable desirable gambles [69.62715388742298]
  Two particles are identical if all their intrinsic properties, such as spin and charge, are the same. Quantum mechanics is seen as a normative and algorithmic theory guiding an agent to assess her subjective beliefs represented as (coherent) sets of gambles. We show how sets of exchangeable observables (gambles) may be updated after a measurement and discuss the issue of defining entanglement for indistinguishable particle systems.
  arXiv  Detail & Related papers  (2021-05-10T13:11:59Z)
• Observers of quantum systems cannot agree to disagree [55.41644538483948]
  We ask whether agreement between observers can serve as a physical principle that must hold for any theory of the world. We construct examples of (postquantum) no-signaling boxes where observers can agree to disagree.
  arXiv  Detail & Related papers  (2021-02-17T19:00:04Z)
• The Time-Evolution of States in Quantum Mechanics [77.34726150561087]
  It is argued that the Schr"odinger equation does not yield a correct description of the quantum-mechanical time evolution of states of isolated (open) systems featuring events. A precise general law for the time evolution of states replacing the Schr"odinger equation is formulated within the so-called ETH-Approach to Quantum Mechanics.
  arXiv  Detail & Related papers  (2021-01-04T16:09:10Z)
• Testing Quantum Coherence in Stochastic Electrodynamics with Squeezed Schr\"{o}dinger Cat States [0.0]
  The interference pattern in electron double-slit diffraction is a hallmark of quantum mechanics. Electrodynamics (SED) is a valid alternative to quantum mechanics. We give a counterexample that rejects SED as a valid alternative to quantum mechanics.
  arXiv  Detail & Related papers  (2020-11-25T17:42:51Z)
• Quantum erasing the memory of Wigner's friend [0.0]
  Wigner's friend paradox concerns one of the most puzzling problems of quantum mechanics. At the core of the paradox lies the description of an observer and the object it measures as a closed system obeying the Schr"odinger equation. We argue that the three apparently incompatible properties used to question the consistency of quantum mechanics correspond to two logically distinct contexts.
  arXiv  Detail & Related papers  (2020-09-21T14:24:58Z)
• A Steering Paradox for Einstein-Podolsky-Rosen Argument and its Extended Inequality [0.0]
  We formulate the original EPR steering paradox into a contradiction equality. We perform an experimental test of the steering paradox in a two-qubit scenario. Our results deepen the understanding of quantum foundations and provide an efficient way to detect the steerability of quantum states.
  arXiv  Detail & Related papers  (2020-04-09T03:42:44Z)
• Unitary-Only Quantum Theory Cannot Consistently Describe the Use of Itself: On the Frauchiger-Renner Paradox [0.0]
  The Frauchiger-Renner Paradox is an extension of paradoxes based on the 'Problem of Measurement,' such as Schrodinger's Cat and Wigner's Friend. This paper discusses a basic inconsistency arising in the FR scenario at a much earlier point than the derived contradiction.
  arXiv  Detail & Related papers  (2020-02-04T18:34:20Z)
• Interference of Clocks: A Quantum Twin Paradox [39.645665748998816]
  Phase of matter waves depends on proper time and is susceptible to special-relativistic (kinematic) and gravitational (redshift) time dilation. It is conceivable that atom interferometers measure general-relativistic time-dilation effects. We show that closed light-pulse interferometers without clock transitions during the pulse sequence are not sensitive to gravitational time dilation in a linear potential.
  arXiv  Detail & Related papers  (2019-05-22T12:30:57Z)

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.