In contrast to a single quantum bit, an oscillator can store multiple excitations and coherences provided one has the ability to generate and manipulate complex multiphoton states. We demonstrate multiphoton control by using a superconducting transmon qubit coupled to a waveguide cavity resonator with a highly ideal off-resonant coupling. This dispersive interaction is much greater than decoherence rates and higher-order nonlinearities to allow simultaneous manipulation of hundreds of photons. With a tool set of conditional qubit-photon logic, we mapped an arbitrary qubit state to a superposition of coherent states, known as a ” cat state.” We created cat states as large as 111 photons and extended this protocol to create superpositions of up to four coherent states. This control creates a powerful interface between discrete and continuous variable quantum computation and could enable applications in metrology and quantum information processing.
%0 Journal Article
%1 Vlastakis2013Deterministically
%A Vlastakis, Brian
%A Kirchmair, Gerhard
%A Leghtas, Zaki
%A Nigg, Simon E.
%A Frunzio, Luigi
%A Girvin, S. M.
%A Mirrahimi, Mazyar
%A Devoret, M. H.
%A Schoelkopf, R. J.
%D 2013
%I American Association for the Advancement of Science
%J Science
%K circuit-qed, schrodinger-cat
%N 6158
%P 607--610
%R 10.1126/science.1243289
%T Deterministically Encoding Quantum Information Using 100-Photon Schrödinger Cat States
%U http://dx.doi.org/10.1126/science.1243289
%V 342
%X In contrast to a single quantum bit, an oscillator can store multiple excitations and coherences provided one has the ability to generate and manipulate complex multiphoton states. We demonstrate multiphoton control by using a superconducting transmon qubit coupled to a waveguide cavity resonator with a highly ideal off-resonant coupling. This dispersive interaction is much greater than decoherence rates and higher-order nonlinearities to allow simultaneous manipulation of hundreds of photons. With a tool set of conditional qubit-photon logic, we mapped an arbitrary qubit state to a superposition of coherent states, known as a ” cat state.” We created cat states as large as 111 photons and extended this protocol to create superpositions of up to four coherent states. This control creates a powerful interface between discrete and continuous variable quantum computation and could enable applications in metrology and quantum information processing.
@article{Vlastakis2013Deterministically,
abstract = {{In contrast to a single quantum bit, an oscillator can store multiple excitations and coherences provided one has the ability to generate and manipulate complex multiphoton states. We demonstrate multiphoton control by using a superconducting transmon qubit coupled to a waveguide cavity resonator with a highly ideal off-resonant coupling. This dispersive interaction is much greater than decoherence rates and higher-order nonlinearities to allow simultaneous manipulation of hundreds of photons. With a tool set of conditional qubit-photon logic, we mapped an arbitrary qubit state to a superposition of coherent states, known as a ” cat state.” We created cat states as large as 111 photons and extended this protocol to create superpositions of up to four coherent states. This control creates a powerful interface between discrete and continuous variable quantum computation and could enable applications in metrology and quantum information processing.}},
added-at = {2019-02-26T15:22:34.000+0100},
author = {Vlastakis, Brian and Kirchmair, Gerhard and Leghtas, Zaki and Nigg, Simon E. and Frunzio, Luigi and Girvin, S. M. and Mirrahimi, Mazyar and Devoret, M. H. and Schoelkopf, R. J.},
biburl = {https://www.bibsonomy.org/bibtex/230c8477e2a7fa375510a4aa3f2104f88/rspreeuw},
citeulike-article-id = {12658643},
citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1243289},
citeulike-linkout-1 = {http://www.sciencemag.org/content/early/2013/09/25/science.1243289.abstract},
citeulike-linkout-2 = {http://www.sciencemag.org/content/early/2013/09/25/science.1243289.full.pdf},
citeulike-linkout-3 = {http://www.sciencemag.org/cgi/content/abstract/342/6158/607},
citeulike-linkout-4 = {http://view.ncbi.nlm.nih.gov/pubmed/24072821},
citeulike-linkout-5 = {http://www.hubmed.org/display.cgi?uids=24072821},
day = 01,
doi = {10.1126/science.1243289},
interhash = {10114b7850c21f7756bc30258ed0a134},
intrahash = {30c8477e2a7fa375510a4aa3f2104f88},
issn = {1095-9203},
journal = {Science},
keywords = {circuit-qed, schrodinger-cat},
month = nov,
number = 6158,
pages = {607--610},
pmid = {24072821},
posted-at = {2013-09-27 09:37:48},
priority = {2},
publisher = {American Association for the Advancement of Science},
timestamp = {2019-02-26T15:22:34.000+0100},
title = {{Deterministically Encoding Quantum Information Using 100-Photon Schr\"{o}dinger Cat States}},
url = {http://dx.doi.org/10.1126/science.1243289},
volume = 342,
year = 2013
}