Circuit quantum electrodynamics with a spin qubit
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Abstract
Electron spins trapped in quantum dots have been proposed as basic building blocks of a future quantum processor1-3. Although fast, 180-picosecond, two-quantum-bit (two-qubit) operations can be realized using nearest-neighbour exchange coupling4, a scalable, spin-based quantum computing architecture will almost certainly require long-range qubit interactions. Circuit quantum electrodynamics (cQED) allows spatially separated superconducting qubits to interact via a superconducting microwave cavity that acts as a 'quantum bus', making possible two-qubit entanglement and the implementation of simple quantum algorithms5-7. Here we combine the cQED architecture with spin qubits by coupling an indium arsenide nanowire double quantum dot to a superconducting cavity8,9. The architecture allows us to achieve a charge-cavity coupling rate of about 30 megahertz, consistent with coupling rates obtained in gallium arsenide quantum dots10. Furthermore, the strong spin-orbit interaction of indium arsenide allows us to drive spin rotations electrically with a local gate electrode, and the charge-cavity interaction provides a measurement of the resulting spin dynamics. Our results demonstrate how the cQED architecture can be used as a sensitive probe of single-spin physics and that a spin-cavity coupling rate of about one megahertz is feasible, presenting the possibility of long-range spin coupling via superconducting microwave cavities.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Circuit quantum electrodynamics with a spin qubit</title><author><name sortKey="Petersson, K D" uniqKey="Petersson K">K. D. Petersson</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Physics, Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author><author><name sortKey="Mcfaul, L W" uniqKey="Mcfaul L">L. W. Mcfaul</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Physics, Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author><author><name sortKey="Schroer, M D" uniqKey="Schroer M">M. D. Schroer</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Physics, Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author><author><name sortKey="Jung, M" uniqKey="Jung M">M. Jung</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Physics, Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author><author><name sortKey="Taylor, J M" uniqKey="Taylor J">J. M. Taylor</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Joint Quantum Institute/NIST</s1><s2>College Park, Maryland 20742</s2><s3>USA</s3><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Joint Quantum Institute/NIST</wicri:noRegion></affiliation></author><author><name sortKey="Houck, A A" uniqKey="Houck A">A. A. Houck</name><affiliation wicri:level="4"><inist:fA14 i1="03"><s1>Department of Electrical Engineering, Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>6 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author><author><name sortKey="Petta, J R" uniqKey="Petta J">J. R. Petta</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Physics, Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation><affiliation wicri:level="4"><inist:fA14 i1="04"><s1>Princeton Institute for the Science and Technology of Materials (PRISM), Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author></titleStmt><publicationStmt><idno type="inist">12-0431107</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 12-0431107 INIST</idno><idno type="RBID">Pascal:12-0431107</idno><idno type="wicri:Area/Main/Corpus">001619</idno><idno type="wicri:Area/Main/Repository">001F36</idno></publicationStmt><seriesStmt><idno type="ISSN">0028-0836</idno><title level="j" type="abbreviated">Nature : (Lond.)</title><title level="j" type="main">Nature : (London)</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Electron spin</term><term>Long range interaction</term><term>Nearest neighbour</term><term>Quantum computing</term><term>Quantum dots</term><term>Quantum electrodynamics</term><term>Quantum entanglement</term><term>Rotation speed</term><term>Spin dynamics</term><term>Spin-orbit interactions</term><term>Strong interactions</term><term>Trapped electrons</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Electrodynamique quantique</term><term>Spin électronique</term><term>Electron piégé</term><term>Point quantique</term><term>Plus proche voisin</term><term>Calcul quantique</term><term>Interaction longue distance</term><term>Intrication quantique</term><term>Interaction forte</term><term>Interaction spin orbite</term><term>Dynamique spin</term><term>Vitesse rotation</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Electron spins trapped in quantum dots have been proposed as basic building blocks of a future quantum processor<sup>1-3</sup>. Although fast, 180-picosecond, two-quantum-bit (two-qubit) operations can be realized using nearest-neighbour exchange coupling<sup>4</sup>, a scalable, spin-based quantum computing architecture will almost certainly require long-range qubit interactions. Circuit quantum electrodynamics (cQED) allows spatially separated superconducting qubits to interact via a superconducting microwave cavity that acts as a 'quantum bus', making possible two-qubit entanglement and the implementation of simple quantum algorithms<sup>5-7</sup>. Here we combine the cQED architecture with spin qubits by coupling an indium arsenide nanowire double quantum dot to a superconducting cavity<sup>8,9</sup>. The architecture allows us to achieve a charge-cavity coupling rate of about 30 megahertz, consistent with coupling rates obtained in gallium arsenide quantum dots<sup>10</sup>. Furthermore, the strong spin-orbit interaction of indium arsenide allows us to drive spin rotations electrically with a local gate electrode, and the charge-cavity interaction provides a measurement of the resulting spin dynamics. Our results demonstrate how the cQED architecture can be used as a sensitive probe of single-spin physics and that a spin-cavity coupling rate of about one megahertz is feasible, presenting the possibility of long-range spin coupling via superconducting microwave cavities.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0028-0836</s0></fA01><fA02 i1="01"><s0>NATUAS</s0></fA02><fA03 i2="1"><s0>Nature : (Lond.)</s0></fA03><fA05><s2>490</s2></fA05><fA06><s2>7420</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Circuit quantum electrodynamics with a spin qubit</s1></fA08><fA11 i1="01" i2="1"><s1>PETERSSON (K. D.)</s1></fA11><fA11 i1="02" i2="1"><s1>MCFAUL (L. W.)</s1></fA11><fA11 i1="03" i2="1"><s1>SCHROER (M. D.)</s1></fA11><fA11 i1="04" i2="1"><s1>JUNG (M.)</s1></fA11><fA11 i1="05" i2="1"><s1>TAYLOR (J. M.)</s1></fA11><fA11 i1="06" i2="1"><s1>HOUCK (A. A.)</s1></fA11><fA11 i1="07" i2="1"><s1>PETTA (J. R.)</s1></fA11><fA14 i1="01"><s1>Department of Physics, Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>7 aut.</sZ></fA14><fA14 i1="02"><s1>Joint Quantum Institute/NIST</s1><s2>College Park, Maryland 20742</s2><s3>USA</s3><sZ>5 aut.</sZ></fA14><fA14 i1="03"><s1>Department of Electrical Engineering, Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>6 aut.</sZ></fA14><fA14 i1="04"><s1>Princeton Institute for the Science and Technology of Materials (PRISM), Princeton University</s1><s2>Princeton, New Jersey 08544</s2><s3>USA</s3><sZ>7 aut.</sZ></fA14><fA20><s1>380-383</s1></fA20><fA21><s1>2012</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>142</s2><s5>354000502061510240</s5></fA43><fA44><s0>0000</s0><s1>© 2012 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>30 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>12-0431107</s0></fA47><fA60><s1>P</s1><s3>CR</s3></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Nature : (London)</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>Electron spins trapped in quantum dots have been proposed as basic building blocks of a future quantum processor<sup>1-3</sup>. Although fast, 180-picosecond, two-quantum-bit (two-qubit) operations can be realized using nearest-neighbour exchange coupling<sup>4</sup>, a scalable, spin-based quantum computing architecture will almost certainly require long-range qubit interactions. Circuit quantum electrodynamics (cQED) allows spatially separated superconducting qubits to interact via a superconducting microwave cavity that acts as a 'quantum bus', making possible two-qubit entanglement and the implementation of simple quantum algorithms<sup>5-7</sup>. Here we combine the cQED architecture with spin qubits by coupling an indium arsenide nanowire double quantum dot to a superconducting cavity<sup>8,9</sup>. The architecture allows us to achieve a charge-cavity coupling rate of about 30 megahertz, consistent with coupling rates obtained in gallium arsenide quantum dots<sup>10</sup>. Furthermore, the strong spin-orbit interaction of indium arsenide allows us to drive spin rotations electrically with a local gate electrode, and the charge-cavity interaction provides a measurement of the resulting spin dynamics. Our results demonstrate how the cQED architecture can be used as a sensitive probe of single-spin physics and that a spin-cavity coupling rate of about one megahertz is feasible, presenting the possibility of long-range spin coupling via superconducting microwave cavities.</s0></fC01><fC02 i1="01" i2="3"><s0>001B00C67L</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>Electrodynamique quantique</s0><s5>26</s5></fC03><fC03 i1="01" i2="3" l="ENG"><s0>Quantum electrodynamics</s0><s5>26</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Spin électronique</s0><s5>27</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Electron spin</s0><s5>27</s5></fC03><fC03 i1="03" i2="3" l="FRE"><s0>Electron piégé</s0><s5>28</s5></fC03><fC03 i1="03" i2="3" l="ENG"><s0>Trapped electrons</s0><s5>28</s5></fC03><fC03 i1="04" i2="3" l="FRE"><s0>Point quantique</s0><s5>29</s5></fC03><fC03 i1="04" i2="3" l="ENG"><s0>Quantum dots</s0><s5>29</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Plus proche voisin</s0><s5>30</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Nearest neighbour</s0><s5>30</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Vecino más cercano</s0><s5>30</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Calcul quantique</s0><s5>31</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Quantum computing</s0><s5>31</s5></fC03><fC03 i1="07" i2="X" l="FRE"><s0>Interaction longue distance</s0><s5>32</s5></fC03><fC03 i1="07" i2="X" l="ENG"><s0>Long range interaction</s0><s5>32</s5></fC03><fC03 i1="07" i2="X" l="SPA"><s0>Interacción larga distancia</s0><s5>32</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Intrication quantique</s0><s5>33</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Quantum entanglement</s0><s5>33</s5></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Interaction forte</s0><s5>34</s5></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Strong interactions</s0><s5>34</s5></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Interaction spin orbite</s0><s5>35</s5></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Spin-orbit interactions</s0><s5>35</s5></fC03><fC03 i1="11" i2="3" l="FRE"><s0>Dynamique spin</s0><s5>36</s5></fC03><fC03 i1="11" i2="3" l="ENG"><s0>Spin dynamics</s0><s5>36</s5></fC03><fC03 i1="12" i2="X" l="FRE"><s0>Vitesse rotation</s0><s5>37</s5></fC03><fC03 i1="12" i2="X" l="ENG"><s0>Rotation speed</s0><s5>37</s5></fC03><fC03 i1="12" i2="X" l="SPA"><s0>Velocidad rotación</s0><s5>37</s5></fC03><fN21><s1>338</s1></fN21></pA></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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