HackerPapers

arXiv:2205.01131quant-ph

A universal quantum rewinding protocol with an arbitrarily high probability of success

David Trillo, Benjamin Dive, Miguel Navascués

Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.

Abstract

We present a universal mechanism that, acting on any target qubit, propagates it to the state it had T time units before the experiment started. This protocol works by setting the target on a superposition of flight paths, where it is acted on by uncharacterized, but repeatable, quantum operations. Independently of the effect of each of these individual operations on the target, the successful interference of the paths causes it to leap to its past state. We prove that, for generic interaction effects, the system will reach the desired state with probability 1 after some finite number of steps.

arXiv comments
4+4 pages, 3 figures
Journal reference
DOI
doi:10.1103/PhysRevLett.130.110201
Subjects
quant-phQuantum Physics

On Hacker News

Linked by 1 identifiable commenter in 1 comment across 1 thread, from Feb 2023 to Feb 2023.

Comments linking this paper, per year.

Discussed in comments1 thread

  1. Scientists prove particles in a quantum system can be rejuvenated 1 comment

    • "Resetting Uncontrolled Quantum Systems" - https://journals.aps.org/prx/abstract/10.1103/PhysRevX.8.031... "Translating Uncontrolled Systems in Time" - https://quantum-journal.org/papers/q-2020-12-15-374/ "A universal quantum rewinding protocol with an arbitrarily high…

      belterView on HNParent context

Submitted to Hacker News

Connected through shared HN threads, not inferred similarity or a recommendation.