1. Channel Coding of a Quantum Measurement
- Author
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Joonwoo Bae, Filip Wudarski, Chahan M. Kropf, and Spiros Kechrimparis
- Subjects
Quantum Physics ,Channel code ,LOCC ,Computer Networks and Communications ,Computer science ,Hilbert space ,FOS: Physical sciences ,020206 networking & telecommunications ,02 engineering and technology ,Topology ,symbols.namesake ,Qubit ,0202 electrical engineering, electronic engineering, information engineering ,symbols ,Electrical and Electronic Engineering ,Quantum Physics (quant-ph) ,Quantum information science ,Protocol (object-oriented programming) ,Quantum ,Communication channel ,Quantum computer - Abstract
In this work, we consider the preservation of a measurement for quantum systems interacting with an environment. Namely, a method of preserving an optimal measurement over a channel is devised, what we call channel coding of a quantum measurement in that operations are applied before and after a channel in order to protect a measurement. A protocol that preserves a quantum measurement over an arbitrary channel is shown only with local operations and classical communication without the use of a larger Hilbert space. Therefore, the protocol is readily feasible with present day's technologies. Channel coding of qubit measurements is presented, and it is shown that a measurement can be preserved for an arbitrary channel for both i) pairs of qubit states and ii) ensembles of equally probable states. The protocol of preserving a quantum measurement is demonstrated with IBM quantum computers., 9pages, 3 figures
- Published
- 2020
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