Robust state preparation of a single trapped ion by adiabatic passage

We report adiabatic passage experiments with a single trapped ion. By applying a frequency-chirped laser pulse with a Gaussian amplitude envelope, we reach a transfer efficiency of 0.99(1) on an optical transition from the electronic ground state S1/2 to the metastable state D5/2. This transfer method is shown to be insensitive to the accurate setting of laser parameters, and therefore is suitable as a robust tool for ion-based quantum computing.

[1]  C. S. Wood,et al.  Deterministic Entanglement of Two Trapped Ions , 1998 .

[2]  Thomas de Quincey.  [C] , 2000, The Works of Thomas De Quincey, Vol. 1: Writings, 1799–1820.

[3]  O. Gühne,et al.  03 21 7 2 3 M ar 2 00 6 Scalable multi-particle entanglement of trapped ions , 2006 .

[4]  Adiabatic inversion with light pulses , 1968 .

[5]  Counter-intuitive vacuum-stimulated raman scattering , 2002, quant-ph/0208188.

[6]  E. Knill,et al.  Deterministic quantum teleportation of atomic qubits , 2004, Nature.

[7]  Christoph Becher,et al.  The coherence of qubits based on single Ca+ions , 2003 .

[8]  Blatt,et al.  Trapping states of motion with cold ions. , 1995, Physical review. A, Atomic, molecular, and optical physics.

[9]  J. A. Jones,et al.  Use of composite rotations to correct systematic errors in NMR quantum computation , 1999, quant-ph/9911072.

[10]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[11]  F. Mintert,et al.  Ion-trap quantum logic using long-wavelength radiation. , 2001, Physical review letters.

[12]  Thierry Paul,et al.  Quantum computation and quantum information , 2007, Mathematical Structures in Computer Science.

[13]  C. F. Roos,et al.  Speed of ion-trap quantum-information processors , 2000, quant-ph/0003087.

[14]  Christoph Becher,et al.  Control and Measurement of Three-Qubit Entangled States , 2004, Science.

[15]  I. Chuang,et al.  Experimental realization of Shor's quantum factoring algorithm using nuclear magnetic resonance , 2001, Nature.

[16]  B. Shore,et al.  Coherent population transfer among quantum states of atoms and molecules , 1998 .

[17]  Andrew M. Childs,et al.  Universal quantum computation with two-level trapped ions , 2000 .

[18]  L. Vandersypen,et al.  NMR techniques for quantum control and computation , 2004, quant-ph/0404064.

[19]  C. Salomon,et al.  NEUTRAL ATOMS PREPARED IN FOCK STATES OF A ONE-DIMENSIONAL HARMONIC POTENTIAL , 1999 .

[20]  Broers,et al.  Efficient population transfer in a three-level ladder system by frequency-swept ultrashort laser pulses. , 1992, Physical review letters.

[21]  Richard Phillips Feynman,et al.  Geometrical Representation of the Schrödinger Equation for Solving Maser Problems , 1957 .

[22]  Jonathan A. Jones.  Robust Ising gates for practical quantum computation , 2003 .

[23]  F. Schmidt-Kaler,et al.  Implementation of the Deutsch–Jozsa algorithm on an ion-trap quantum computer , 2003, Nature.

[24]  H. Häffner,et al.  How to realize a universal quantum gate with trapped ions , 2003, quant-ph/0312162.

[25]  J. A. Jones,et al.  Tackling systematic errors in quantum logic gates with composite rotations , 2003 .

[26]  F. Schmidt-Kaler,et al.  Deterministic quantum teleportation with atoms , 2004, Nature.

[27]  J. Cirac,et al.  Laser cooling of two trapped ions: Sideband cooling beyond the Lamb-Dicke limit , 1998, quant-ph/9812014.

[28]  Christof Wunderlich,et al.  Quantum Measurements and New Concepts for Experiments with Trapped Ions , 2003 .

[29]  J. Cirac,et al.  Quantum Computations with Cold Trapped Ions. , 1995, Physical review letters.