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Magnetic qubits as hardware for quantum computers

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Magnetic qubits as hardware for quantum computers. / Tejada, J.; Chudnovsky, E. M.; Del Barco, E.; Hernandez, J. M.; Spiller, T. P.

In: Nanotechnology, Vol. 12, No. 2, 01.06.2001, p. 181-186.

Research output: Contribution to journalConference article

Harvard

Tejada, J, Chudnovsky, EM, Del Barco, E, Hernandez, JM & Spiller, TP 2001, 'Magnetic qubits as hardware for quantum computers', Nanotechnology, vol. 12, no. 2, pp. 181-186. https://doi.org/10.1088/0957-4484/12/2/323

APA

Tejada, J., Chudnovsky, E. M., Del Barco, E., Hernandez, J. M., & Spiller, T. P. (2001). Magnetic qubits as hardware for quantum computers. Nanotechnology, 12(2), 181-186. https://doi.org/10.1088/0957-4484/12/2/323

Vancouver

Tejada J, Chudnovsky EM, Del Barco E, Hernandez JM, Spiller TP. Magnetic qubits as hardware for quantum computers. Nanotechnology. 2001 Jun 1;12(2):181-186. https://doi.org/10.1088/0957-4484/12/2/323

Author

Tejada, J. ; Chudnovsky, E. M. ; Del Barco, E. ; Hernandez, J. M. ; Spiller, T. P. / Magnetic qubits as hardware for quantum computers. In: Nanotechnology. 2001 ; Vol. 12, No. 2. pp. 181-186.

Bibtex - Download

@article{15df2e4e97e342f1bf138ba8e0635e66,
title = "Magnetic qubits as hardware for quantum computers",
abstract = "We propose two potential realizations for quantum bits based on nanometre-scale magnetic particles of large spin S and high-anisotropy molecular clusters. In case (1) the bit-value basis states |0〉 and |1〉 are the ground and first excited spin states Sz = S and S - 1, separated by an energy gap given by the ferromagnetic resonance frequency. In case (2), when there is significant tunnelling through the anisotropy barrier, the qubit states correspond to the symmetric, |0〉, and antisymmetric, |1〉, combinations of the twofold degenerate ground state Sz = ±S. In each case the temperature of operation must be low compared to the energy gap, Δ, between the states |0〉 and |1〉. The gap Δ in case (2) can be controlled with an external magnetic field perpendicular to the easy axis of the molecular cluster. The states of different molecular clusters and magnetic particles may be entangled by connecting them by superconducting lines with Josephson switches, leading to the potential for quantum computing hardware.",
author = "J. Tejada and Chudnovsky, {E. M.} and {Del Barco}, E. and Hernandez, {J. M.} and Spiller, {T. P.}",
year = "2001",
month = "6",
day = "1",
doi = "10.1088/0957-4484/12/2/323",
language = "English",
volume = "12",
pages = "181--186",
journal = "Nanotechnology",
issn = "0957-4484",
publisher = "IOP Publishing Ltd.",
number = "2",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Magnetic qubits as hardware for quantum computers

AU - Tejada, J.

AU - Chudnovsky, E. M.

AU - Del Barco, E.

AU - Hernandez, J. M.

AU - Spiller, T. P.

PY - 2001/6/1

Y1 - 2001/6/1

N2 - We propose two potential realizations for quantum bits based on nanometre-scale magnetic particles of large spin S and high-anisotropy molecular clusters. In case (1) the bit-value basis states |0〉 and |1〉 are the ground and first excited spin states Sz = S and S - 1, separated by an energy gap given by the ferromagnetic resonance frequency. In case (2), when there is significant tunnelling through the anisotropy barrier, the qubit states correspond to the symmetric, |0〉, and antisymmetric, |1〉, combinations of the twofold degenerate ground state Sz = ±S. In each case the temperature of operation must be low compared to the energy gap, Δ, between the states |0〉 and |1〉. The gap Δ in case (2) can be controlled with an external magnetic field perpendicular to the easy axis of the molecular cluster. The states of different molecular clusters and magnetic particles may be entangled by connecting them by superconducting lines with Josephson switches, leading to the potential for quantum computing hardware.

AB - We propose two potential realizations for quantum bits based on nanometre-scale magnetic particles of large spin S and high-anisotropy molecular clusters. In case (1) the bit-value basis states |0〉 and |1〉 are the ground and first excited spin states Sz = S and S - 1, separated by an energy gap given by the ferromagnetic resonance frequency. In case (2), when there is significant tunnelling through the anisotropy barrier, the qubit states correspond to the symmetric, |0〉, and antisymmetric, |1〉, combinations of the twofold degenerate ground state Sz = ±S. In each case the temperature of operation must be low compared to the energy gap, Δ, between the states |0〉 and |1〉. The gap Δ in case (2) can be controlled with an external magnetic field perpendicular to the easy axis of the molecular cluster. The states of different molecular clusters and magnetic particles may be entangled by connecting them by superconducting lines with Josephson switches, leading to the potential for quantum computing hardware.

UR - http://www.scopus.com/inward/record.url?scp=0035356971&partnerID=8YFLogxK

U2 - 10.1088/0957-4484/12/2/323

DO - 10.1088/0957-4484/12/2/323

M3 - Conference article

VL - 12

SP - 181

EP - 186

JO - Nanotechnology

JF - Nanotechnology

SN - 0957-4484

IS - 2

ER -