Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Quantum Information and Measurement (QIM)

Communicating via ignorance & imaging via counting

Andrew G. White

Published Jan 1, 2019• 0 citations
Publisher

Abstract

We use quantum technologies to improve communication and imaging. Significant information is transmitted through a completely noisy channel using indefinite causal order. Imaging remote bodies via photon-counting is an order-of-magnitude more precise than traditional methods.
DOI
10.1364/qim.2019.t3a.1

Related papers

Communicating via ignorance & imaging via counting

Andrew G. White

We use quantum technologies to improve communication and imaging. Significant information is transmitted through a completely noisy channel using indefinite causal order. Imaging remote bodies via photon-counting is an order-of-magnitude more precise than traditional methods.

Optics InfoBase Conference Papers•Jan 1, 2019•0 citations

Communicating via ignorance & imaging via counting

Andrew G. White

We use quantum technologies to improve communication and imaging. Significant information is transmitted through a completely noisy channel using indefinite causal order. Imaging remote bodies via photon-counting is an order-of-magnitude more precise than traditional methods.

Frontiers in Optics•Jan 1, 2019•0 citations

Quantum Information in Communication and Imaging

David S. Simon, Gregg S. Jaeger, Alexander V. Sergienko

WORLD SCIENTIFIC eBooks•Sep 28, 2014•1 citation

Measuring the impossible by ignorance of events

Melvee George, William Gunn, Jaden McKinlay +5 more

In this talk I’ll introduce indefinite causal order— quantum superposition of ordering of events—and show you how it can be done with photons, the fundamental particle of light. We’ll then explore using this trick to communicate via perfectly noisy channels—which is classically impossible—and to measure rotations with completely noisy probes via a channel that erases all information—again, classically impossible. Questions before, during, and after the talk are highly encouraged.

Complex Light and Optical Forces•Mar 5, 2026•0 citations

Let Quantum Mechanics Improve Your Images

Robert W. Boyd

Entanglement of light beams allows images to be transmitted and recorded in ways that surpass classical limits.

Science•Jul 24, 2008•0 citations

Increasing communication capacity via superposition of order

Kaumudibikash Goswami, Y. Cao, Gerardo A. Paz-Silva +2 more

Classically, no information can be transmitted through a depolarising, which is a completely noisy, channel.We show that by combining a depolarising channel with another channel in an indefinite causal order-that is, when there is a superposition of the order that these two channels were applied-it becomes possible to transmit significant information.We consider two limiting cases.When both channels are fully depolarising, the ideal limit is communication of 0.049 bits; experimentally we achieve (3.4 ± 0.2) × 10 -2 bits.When one channel is fully depolarising, and the other is a known unitary, the ideal limit is communication of 1 bit.We experimentally achieve 0.64 ± 0.02 bits.Our results offer intriguing possibilities for future communication strategies beyond conventional quantum Shannon theory.

arXiv:1807.07383•Physical Review Research•Aug 24, 2020•90 citations
Classically, no information can be transmitted through a depolarising, which is a completely noisy, channel.We show that by combining a depolarising channel with another channel in an indefinite causal order-that is, when there is a superposition of the order that these two channels were applied-it becomes possible to transmit significant information.We consider two limiting cases.When both channels are fully depolarising, the ideal limit is communication of 0.049 bits; experimentally we achieve (3.4 ± 0.2) × 10 -2 bits.When one channel is fully depolarising, and the other is a known unitary, the ideal limit is communication of 1 bit.We experimentally achieve 0.64 ± 0.02 bits.Our results offer intriguing possibilities for future communication strategies beyond conventional quantum Shannon theory.