Results 51 to 60 of about 2,092,913 (379)

Pauli Error Propagation-Based Gate Rescheduling for Quantum Circuit Error Mitigation

IEEE Transactions on Quantum Engineering, 2022
Noisy intermediate-scale quantum algorithms, which run on noisy quantum computers, should be carefully designed to boost the output state fidelity. While several compilation approaches have been proposed to minimize circuit errors, they often omit the ...
Vedika Saravanan, Samah M. Saeed
doaj   +1 more source

Complete Characterization of a Quantum Process: the Two-Bit Quantum Gate [PDF]

, 1996
We show how to fully characterize a quantum process in an open quantum system. We particularize the procedure to the case of a universal two-qubit gate in a quantum computer.
A. Peres, C. H. Bennett, C. Monroe, J. F. Poyatos, J. I. Cirac, J. I. Cirac, P. Zoller, Q. A. Turchette, U. Leonhardt, W. K. Wootters   +9 more
core   +2 more sources

Quantum walks, quantum gates, and quantum computers [PDF]

Physical Review A, 2007
The physics of quantum walks on graphs is formulated in Hamiltonian language, both for simple quantum walks and for composite walks, where extra discrete degrees of freedom live at each node of the graph. It is shown how to map between quantum walk Hamiltonians and Hamiltonians for qubit systems and quantum circuits; this is done for both a single- and
Andrew P. Hines, Andrew P. Hines, Philip Stamp   +2 more
openaire   +2 more sources

High-fidelity parallel entangling gates on a neutral-atom quantum computer [PDF]

Nature, 2023
The ability to perform entangling quantum operations with low error rates in a scalable fashion is a central element of useful quantum information processing^ 1 .
S. Evered, D. Bluvstein, M. Kalinowski, S. Ebadi, T. Manovitz, Hengyun Zhou, Sophie H. Li, A. Geim, Tout T. Wang, N. Maskara, H. Levine, G. Semeghini, M. Greiner, V. Vuletić, M. Lukin   +14 more
semanticscholar   +1 more source

Quantum Gates to Other Universes [PDF]

Fortschritte der Physik, 2018
AbstractWe present a microscopic model of a bridge connecting two large Anti‐de‐Sitter Universes. The Universes admit a holographic description as three‐dimensional supersymmetric gauge theories based on large linear quivers, and the bridge is a small rank‐n gauge group that acts as a messenger.
Bachas, Constantin, Lavdas, Ioannis
openaire   +3 more sources

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

Efficient Decomposition of Quantum Gates [PDF]

Physical Review Letters, 2004
Optimal implementation of quantum gates is crucial for designing a quantum computer. We consider the matrix representation of an arbitrary multiqubit gate. By ordering the basis vectors using the Gray code, we construct the quantum circuit which is optimal in the sense of fully controlled single-qubit gates and yet is equivalent with the multiqubit ...
Juha J. Vartiainen, Martti M. Salomaa, Mikko Möttönen   +2 more
openaire   +4 more sources

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

Measuring Controlled-NOT and two-qubit gate operation [PDF]

, 2003
Accurate characterisation of two-qubit gates will be critical for any realisation of quantum computation. We discuss a range of measurements aimed at characterising a two-qubit gate, specifically the CNOT gate.
Alexei Gilchrist, Altepeter, Andrew G. White, Barbieri, Bell, Bremner, Childs, Chuang, Cirac, Clauser, Coffman, D'Ariano, De Martini, Dodd, Geoffrey J. Pryde, Gilchrist, Gühne, Hofmann, Horodecki, Horodecki, James, Jamiolkowski, Jeremy L. O'Brien, Langford, Michael J. Bremner, Munro, Munro, Nathan K. Langford, Nielsen, Nielsen, O'Brien, O'Brien, Peters, Poyatos, Sackett, Schmidt-Kaler, Steffen, Terhal, Terhal, White, White, Wootters   +41 more
core   +2 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