Coupling two charge qubits

Yuri Pashkin; Tsuyoshi Yamamoto; Oleg Astafiev; Yasunobu Nakamura; Dmitri Averin; Jaw Shen Tsai

Coupling two charge qubits

Yuri Pashkin
, Tsuyoshi Yamamoto
, Oleg Astafiev
, Yasunobu Nakamura
, Dmitri Averin
, Jaw Shen Tsai

Physics and Astronomy

Stony Brook University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We demonstrate a Josephson circuit consisting of two electrostatically coupled charge quantum bits (qubits). Using a pulse technique, we coherently mix quantum states and observe quantum oscillation, the spectrum of which reflects interaction between the qubits. Our results demonstrate feasibility of coupling multiple solid-state qubits, and indicate the existence of entangled two-qubit states.

Original language	English
Pages (from-to)	273-277
Number of pages	5
Journal	NEC Research and Development
Volume	44
Issue number	3
State	Published - Jul 2003

Keywords

Decoherence
Entanglement
Josephson junction
Quantum computer
Qubits

Cite this

@article{8519741944e14782b5a07d44058a8961,

title = "Coupling two charge qubits",

abstract = "We demonstrate a Josephson circuit consisting of two electrostatically coupled charge quantum bits (qubits). Using a pulse technique, we coherently mix quantum states and observe quantum oscillation, the spectrum of which reflects interaction between the qubits. Our results demonstrate feasibility of coupling multiple solid-state qubits, and indicate the existence of entangled two-qubit states.",

keywords = "Decoherence, Entanglement, Josephson junction, Quantum computer, Qubits",

author = "Yuri Pashkin and Tsuyoshi Yamamoto and Oleg Astafiev and Yasunobu Nakamura and Dmitri Averin and Tsai, \{Jaw Shen\}",

year = "2003",

month = jul,

language = "English",

volume = "44",

pages = "273--277",

journal = "NEC Research and Development",

issn = "0547-051X",

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TY - JOUR

T1 - Coupling two charge qubits

AU - Pashkin, Yuri

AU - Yamamoto, Tsuyoshi

AU - Astafiev, Oleg

AU - Nakamura, Yasunobu

AU - Averin, Dmitri

AU - Tsai, Jaw Shen

PY - 2003/7

Y1 - 2003/7

N2 - We demonstrate a Josephson circuit consisting of two electrostatically coupled charge quantum bits (qubits). Using a pulse technique, we coherently mix quantum states and observe quantum oscillation, the spectrum of which reflects interaction between the qubits. Our results demonstrate feasibility of coupling multiple solid-state qubits, and indicate the existence of entangled two-qubit states.

AB - We demonstrate a Josephson circuit consisting of two electrostatically coupled charge quantum bits (qubits). Using a pulse technique, we coherently mix quantum states and observe quantum oscillation, the spectrum of which reflects interaction between the qubits. Our results demonstrate feasibility of coupling multiple solid-state qubits, and indicate the existence of entangled two-qubit states.

KW - Decoherence

KW - Entanglement

KW - Josephson junction

KW - Quantum computer

KW - Qubits

UR - https://www.scopus.com/pages/publications/0042318518

M3 - Article

SN - 0547-051X

VL - 44

SP - 273

EP - 277

JO - NEC Research and Development

JF - NEC Research and Development

IS - 3

ER -

Coupling two charge qubits

Abstract

Keywords

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