Qubit addressing using hyperfine-interaction control by an electric field in a magnetic crystal

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.012311· OSTI ID:21440479

Song, Myeonghun; Lee, Soonchil; Lockwood, David J ^[1]

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1. Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)

We demonstrate experimentally the hyperfine-interaction control by an electric field, which is the operating principle of the addressable qubit operation in a silicon-based solid-state quantum computer in a new quantum computer system, a magnetic crystal. The transferred hyperfine field at a F{sup -} nucleus caused by neighboring Mn{sup 2+} electron spins in an antiferromagnetic MnF{sub 2} single crystal was measured by {sup 19}F nuclear magnetic resonance (NMR) with an external electric field applied along the [110] crystal direction. The electric field splits the {sup 19}F NMR peak into two resolved lines that come from the F nuclei located at geometrically equivalent sites. A line splitting of 56 kHz was achieved at an electric field of 3.4 V/{mu}m. One of the F{sup -} nuclear spins could be flipped selectively by a composite radio-frequency pulse while leaving the other unchanged, thereby demonstrating qubit addressing via electric field control of the hyperfine interaction.

• OSTI ID: 21440479
• Journal Information: Physical Review. A, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevA.82.012311; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTIFERROMAGNETISM
CONTROL
ELECTRIC FIELDS
ELECTRONS
FLUORINE 19
FLUORINE IONS
HYPERFINE STRUCTURE
KHZ RANGE
MANGANESE FLUORIDES
MANGANESE IONS
MONOCRYSTALS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
OPERATION
PULSES
QUANTUM COMPUTERS
RADIOWAVE RADIATION
SILICON
SPIN
ANGULAR MOMENTUM
CHARGED PARTICLES
COMPUTERS
CRYSTALS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FLUORIDES
FLUORINE COMPOUNDS
FLUORINE ISOTOPES
FREQUENCY RANGE
HALIDES
HALOGEN COMPOUNDS
IONS
ISOTOPES
LEPTONS
LIGHT NUCLEI
MAGNETIC RESONANCE
MAGNETISM
MANGANESE COMPOUNDS
MANGANESE HALIDES
NUCLEI
ODD-EVEN NUCLEI
PARTICLE PROPERTIES
RADIATIONS
RESONANCE
SEMIMETALS
SPECTRA
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS