Skip navigation
Skip navigation

Unconditional room-temperature quantum memory

Hosseini, Mahdi; Campbell, Geoff; Sparkes, Benjamin; Lam, Ping Koy; Buchler, Benjamin

Description

Just as classical information systems require buffers and memory, the same is true for quantum information systems. The potential that optical quantum information processing holds for revolutionizing computation and communication is therefore driving significant research into developing optical quantum memory. A practical optical quantum memory must be able to store and recall quantum states on demand with high efficiency and low noise. Ideally, the platform for the memory would also be simple...[Show more]

dc.contributor.authorHosseini, Mahdi
dc.contributor.authorCampbell, Geoff
dc.contributor.authorSparkes, Benjamin
dc.contributor.authorLam, Ping Koy
dc.contributor.authorBuchler, Benjamin
dc.date.accessioned2015-12-10T23:32:34Z
dc.identifier.issn1745-2473
dc.identifier.urihttp://hdl.handle.net/1885/68883
dc.description.abstractJust as classical information systems require buffers and memory, the same is true for quantum information systems. The potential that optical quantum information processing holds for revolutionizing computation and communication is therefore driving significant research into developing optical quantum memory. A practical optical quantum memory must be able to store and recall quantum states on demand with high efficiency and low noise. Ideally, the platform for the memory would also be simple and inexpensive. Here, we present a complete tomographic reconstruction of quantum states that have been stored in the ground states of rubidium in a vapour cell operating at around 80 °C. Without conditional measurements, we show recall fidelity up to 98% for coherent pulses containing around one photon. To unambiguously verify that our memory beats the quantum no-cloning limit we employ state-independent verification using conditional variance and signal-transfer coefficients.
dc.publisherNature Publishing Group
dc.sourceNature Physics
dc.titleUnconditional room-temperature quantum memory
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume7
dc.date.issued2011
local.identifier.absfor020603 - Quantum Information, Computation and Communication
local.identifier.ariespublicationf2965xPUB1856
local.type.statusPublished Version
local.contributor.affiliationHosseini, Mahdi, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationCampbell, Geoff, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSparkes, Benjamin, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLam, Ping Koy, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBuchler, Benjamin, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue10
local.bibliographicCitation.startpage794
local.bibliographicCitation.lastpage798
local.identifier.doi10.1038/nphys2021
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2015-12-10T11:20:38Z
local.identifier.scopusID2-s2.0-80053602352
local.identifier.thomsonID000295584200019
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Hosseini_Unconditional_room-temperature_2011.pdf729.55 kBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator