Randomized Benchmarking of Quantum Gates
- E. Knill, D. Leibfried, D. Wineland
- Computer Science
- 1 March 2007
A key requirement for scalable quantum computing is that elementary quantum gates can be implemented with sufficiently low error. One method for determining the error behavior of a gate…
Long-lived qubit memory using atomic ions.
- C. Langer, R. Ozeri, D. Wineland
- PhysicsPhysical Review Letters
- 11 April 2005
A robust quantum memory is demonstrated experimentally using a magnetic-field-independent hyperfine transition in 9Be+ atomic ion qubits at a magnetic field B approximately = 0.01194 T.
Fluorescence during Doppler cooling of a single trapped atom
- J. Wesenberg, R. Epstein, D. Wineland
- Physics
- 9 July 2007
We investigate the temporal dynamics of Doppler cooling of an initially hot single trapped atom in the weak-binding regime using a semiclassical approach. We develop an analytical model for the…
Microfabricated surface-electrode ion trap for scalable quantum information processing.
- S. Seidelin, J. Chiaverini, D. Wineland
- PhysicsPhysical Review Letters
- 26 January 2006
Measurements of ion recooling after cooling is temporarily suspended yield a heating rate of approximately 5 motional quanta per millisecond for a trap frequency of 2.83 MHz, sufficiently low to be useful for QIP.
Creation of a six-atom ‘Schrödinger cat’ state
- D. Leibfried, E. Knill, D. Wineland
- PhysicsNature
- 1 December 2005
The creation of cat states of up to six atomic qubits is reported, which represents the current state-of-the-art for large entangled states in any qubit system.
Realization of quantum error correction
- J. Chiaverini, D. Leibfried, D. Wineland
- PhysicsNature
- 2 December 2004
In principle, the approach enables a quantum state to be maintained by means of repeated error correction, an important step towards scalable fault-tolerant quantum computation using trapped ions.
Dynamics of a Ground-State Cooled Ion Colliding with Ultracold Atoms.
- Z. Meir, T. Sikorsky, Ruti Ben-shlomi, N. Akerman, Yehonatan Dallal, R. Ozeri
- PhysicsPhysical Review Letters
- 6 March 2016
The dynamics of a single ground-state cooled ion during few, to many, Langevin (spiraling) collisions with ultracold atoms are studied and a clear deviation from the Maxwell-Boltzmann distribution is observed, characterized by an exponential tail, to a power-law distribution best described by a Tsallis function.
Surface-electrode architecture for ion-trap quantum information processing
- J. Chiaverini, R. B. Blakestad, D. Wineland
- PhysicsQuantum information & computation
- 25 January 2005
A surface-mounted electrode geometry for miniature linear radio frequencyPaul ion traps that provides the possibility to apply standard microfabrication principles to the construction of multiplexed ion traps, which may be of particular importance in light of recent proposals for large-scalequantum computation based on individual trapped ions.
Errors in trapped-ion quantum gates due to spontaneous photon scattering
- R. Ozeri, W. Itano, D. Wineland
- Physics
- 17 May 2006
We analyze the error in trapped-ion, hyperfine qubit, quantum gates due to spontaneous scattering of photons from the gate laser beams. We investigate single-qubit rotations that are based on…
Deterministic quantum teleportation of atomic qubits
- M. Barrett, J. Chiaverini, D. Wineland
- PhysicsNature
- 17 June 2004
Un unconditional teleportation of massive particle qubits using atomic (9Be+) ions confined in a segmented ion trap is reported, which achieves an average fidelity of 78 per cent, which exceeds the fidelity of any protocol that does not use entanglement.
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