Preparation of multi-qubit W states in multiple resonators coupled by a superconducting qubit via adiabatic passage

Preparation of multi-qubit W states in multiple resonators coupled by a superconducting qubit via... We propose an efficient scheme to prepare W state of $$N$$ N superconducting (SC) qubits in $$N$$ N spatially separated coplanar waveguide (CPW) resonators via adiabatic passage. The $$N$$ N CPW resonators, each trapping a SC qubit, are coupled only by a superconducting coupler (SCC) qubit. Based on a circuit quantum electrodynamics system, our scheme can be controlled and implemented easily in experiment. As a model of a plurality of separated cavities coupled to a SCC qubit, our protocol can be useful in scalable distributed quantum networks. By introducing adiabatic passage into our model, there is no need to control the Rabi frequency of classical field and the interaction time precisely during the whole operation. Also, the dissipation from the resonators and the energy relaxation can be omitted approximately. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Preparation of multi-qubit W states in multiple resonators coupled by a superconducting qubit via adiabatic passage

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Publisher
Springer US
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-015-0973-5
Publisher site
See Article on Publisher Site

Abstract

We propose an efficient scheme to prepare W state of $$N$$ N superconducting (SC) qubits in $$N$$ N spatially separated coplanar waveguide (CPW) resonators via adiabatic passage. The $$N$$ N CPW resonators, each trapping a SC qubit, are coupled only by a superconducting coupler (SCC) qubit. Based on a circuit quantum electrodynamics system, our scheme can be controlled and implemented easily in experiment. As a model of a plurality of separated cavities coupled to a SCC qubit, our protocol can be useful in scalable distributed quantum networks. By introducing adiabatic passage into our model, there is no need to control the Rabi frequency of classical field and the interaction time precisely during the whole operation. Also, the dissipation from the resonators and the energy relaxation can be omitted approximately.

Journal

Quantum Information ProcessingSpringer Journals

Published: Apr 14, 2015

References

  • Circuit quantum electrodynamics with a spin qubit
    Petersson, KD; McFaul, LW; Schroer, MD; Jung, M; Taylor, JM; Houck, AA; Petta, JR
  • Hybrid quantum circuits: superconducting circuits interacting with other quantum systems
    Xiang, ZL; Ashhab, S; You, JQ; Nori, F
  • Generation of Fock states in a superconducting quantum circuit
    Hofheinz, M; Weig, EM; Ansmann, M; Bialczak, RC; Lucero, E; Neeley, M; O’Connell, AD; Wang, H; Martinis, JM; Cleland, AN
  • Synthesizing arbitrary quantum states in a superconducting resonator
    Hofheinz, M; Wang, H; Ansmann, M; Bialczak, RC; Lucero, E; Neeley, M; O’Connell, AD; Sank, D; Wenner, J; Martinis, JM; Cleland, AN
  • Preparation and measurement of three-qubit entanglement in a superconducting circuit
    DiCarlo, L; Reed, MD; Sun, L; Johnson, BR; Chow, JM; Gambetta, JM; Frunzio, L; Girvin, SM; Devoret, MH; Schoelkopf, RJ
  • Generating entanglement between microwave photons and qubits in multiple cavities coupled by a superconducting qutrit
    Yang, CP; Su, QP; Zheng, SB; Han, SY
  • Population transfer between molecular vibrational levels by stimulated Raman scattering with partially overlapping laser fields. A new concept and experimental results
    Gaubatz, U; Rudecki, P; Schiemann, S; Bergmann, K

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