Results 51 to 60 of about 2,130,806 (337)

Quantum computing in optical microtraps based on the motional states of neutral atoms [PDF]

, 2002
We investigate quantum computation with neutral atoms in optical microtraps where the qubit is implemented in the motional states of the atoms, i.e., in the two lowest vibrational states of each trap.
A. Barenco, A. Rauschenbeutel, A. Recati, C. C. Bradley, C. Monroe, D. Bruß, D. Frese, D. G. Cory, D. Jaksch, D. Jaksch, D. Loss, D. P. Divicenzo, E. Andersson, E. Andersson, E. Charron, E. Hagley, F. B. J. Buchkremer, F. B. J. Buchkremer, G. Birkl, G. Birkl, G. Burkard, G. Burkard, G. Grynberg, G. K. Brennen, I. Bouchoule, I. E. Protsenko, I. H. Deutsch, I. L. Chuang, J. D. Weinstein, J. I. Cirac, J. I. Cirac, J. M. Raimond, J. Mompart, J. Reichel, J. Schliemann, J. Schliemann, J. Schliemann, J. Schmiedmayer, K. B. Daves, K. Eckert, K. Eckert, L. G. Lutterbach, L. M. K. Vandersypen, L. M. K. Vandersypen, M. H. Anderson, M. Lewenstein, M. Morinaga, N. A. Gershenfeld, N. H. Dekker, N. Schlosser, P. Domokos, Q. A. Turchette, Q. A. Turchette, R. Dumke, R. Folman, R. Paskauskas, S. L. Cornish, T. Calarco, T. Calarco, T. Pellizzari, T. Sleator, V. Giovannetti, W. Hänsel, X. X. Yi   +63 more
core   +4 more sources

High-fidelity Rydberg quantum gate via a two-atom dark state [PDF]

, 2017
A modified Rydberg blockade gate that employs adiabatic following of a two-atom dark state is proposed. The scheme is resilient to the uncertainty in the interaction strength and can be employed to achieve fault-tolerant quantum computation with neutral ...
D. Petrosyan, F. Motzoi, M. Saffman, K. Mølmer   +3 more
semanticscholar   +1 more source

Bespoke pulse design for robust rapid two-qubit gates with trapped ions

Physical Review Research, 2023
Two-qubit gate performance is vital for scaling up ion-trap quantum computing. Optimized quantum control is needed to achieve reductions in gate duration and gate error rate.
Seyed Shakib Vedaie, Eduardo J. Páez, Nhung H. Nguyen, Norbert M. Linke, Barry C. Sanders   +4 more
doaj   +1 more source

Multiqubit quantum phase gate using four-level superconducting quantum interference devices coupled to superconducting resonator

, 2012
In this paper, we propose a scheme to realize three-qubit quantum phase gate of one qubit simultaneously controlling two target qubits using four-level superconducting quantum interference devices (SQUIDs) coupled to a superconducting resonator.
Irfan, Muhammad, Qamar, Shahid, Waseem, Muhammad   +2 more
core   +1 more source

Process tomography of ion trap quantum gates [PDF]

, 2006
A crucial building block for quantum information processing with trapped ions is a controlled-NOT quantum gate. In this paper, two different sequences of laser pulses implementing such a gate operation are analyzed using quantum process tomography ...
C. F. Roos, D. J. Wineland, H. Häffner, K. Kim, M. Riebe, P. O. Schmidt, P. Schindler, R. Blatt, T. K. Körber, T. Monz, W. Hänsel   +10 more
core   +2 more sources

Two-qubit entangling gates for superconducting quantum computers

Results in Physics
Noisy intermediate-scale quantum computers (NISQ) have demonstrated superior performance compared to conventional computing schemes. Nonetheless, errors associated with two-qubit entangling gates remain a substantial obstacle in fully harnessing the ...
Muhammad AbuGhanem, Hichem Eleuch
doaj   +1 more source

Shadow estimation of gate-set properties from random sequences

Nature Communications, 2023
With quantum computing devices increasing in scale and complexity, there is a growing need for tools that obtain precise diagnostic information about quantum operations.
J. Helsen, M. Ioannou, J. Kitzinger, E. Onorati, A. H. Werner, J. Eisert, I. Roth   +6 more
doaj   +1 more source

Gate errors in solid state quantum computer architectures

, 2002
We theoretically consider possible errors in solid state quantum computation due to the interplay of the complex solid state environment and gate imperfections.
A. Shnirman, A. Steane, B.E. Kane, B.E. Kane, C. Monroe, C. Rangan, C.H. Bennett, D. Loss, D. Mozyrsky, D.G. Cory, D.P. DiVincenzo, D.V. Averin, I.P. Christov, J.I. Cirac, M.-S. Choi, N.A. Gershenfeld, R. Fazio, R. Vrijen, S. Das Sarma, V. Privman, X. Hu, X. Hu, Xuedong Hu, Y. Makhlin, Y. Nakamura   +24 more
core   +1 more source

A SWAP gate for qudits

, 2013
We present a quantum SWAP gate valid for quantum systems of an arbitrary dimension. The gate generalizes the CNOT implementation of the SWAP gate for qubits and keeps its most important properties, like symmetry and simplicity.
Chamorro-Posada, Pedro, Garcia-Escartin, Juan Carlos   +1 more
core   +1 more source

Controllable conditional quantum oscillations and synchronization in superconducting flux qubits

, 2010
Conditional quantum oscillations are investigated for quantum gate operations in superconducting flux qubits. We present an effective Hamiltonian which describes a conditional quantum oscillation in two-qubit systems.
Chen, Ai Min, Cho, Sam Young
core   +1 more source