Spin-dependent forces on trapped ions for phase-stable quantum gates and motional Schrodinger-cat states

Abstract

Favored schemes for trapped-ion quantum logic gates use bichromatic laser fields to couple internal qubit states with external motion through a "spin-dependent force." We introduce a new degree of freedom in this coupling that reduces its sensitivity to phase decoherence. We demonstrate bichromatic spin-dependent forces on a single trapped ${}^{111}$Cd${}^{+}$ ion, and show that phase coherence of the resulting "Schrödinger-cat" states of motion depends critically upon the spectral arrangement of the optical fields. This applies directly to the operation of entangling gates on multiple ions.

5 pages, 4 figures

References in corpus (12)

• Experimental issues in coherent quantum-state manipulation of trapped atomic ions
• Multi-particle entanglement of hot trapped ions
• Entanglement and quantum computation with ions in thermal motion
• Coherent control of an atomic collision in a cavity
• Heating of trapped ions from the quantum ground state
• Strong-driving-assisted multipartite entanglement in cavity QED
• Fast and robust two-qubit gates for scalable ion trap quantum computing
• Multi-bit gates for quantum computing
• Creating massive entanglement of Bose condensed atoms
• Zero-Point cooling and low heating of trapped 111Cd+ ions
• Mesoscopic superpositions of vibronic collective states of N trapped ions
• Atomic Qubit Manipulations with an Electro-Optic Modulator

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