J. I. Cirac
Max Planck Society
448 Papers
3.8K Citations
J. I. Cirac is an academic researcher from Max Planck Society. The author has contributed to research in topics: Quantum entanglement & Quantum information. The author has an hindex of 114, co-authored 417 publications. Previous affiliations of J. I. Cirac include Harvard University & University of Innsbruck.
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Papers
Laser cooling of trapped atoms to the ground state: A dark state in position space
TL;DR: In this paper, the authors proposed a scheme that allows us to laser cool trapped atoms to the ground state of a one-dimensional confining potential, based on the creation of a dark state by designing the laser profile, so that the hottest atoms are coherently pumped to another internal level and then repumped back.
Laser cooling of trapped ions with polarization gradients
TL;DR: The results show that laser cooling of a trapped ion using polarization gradients leads to very low energies, which are insensitive to the precise localization of the ion with respect to the lasers, the angle between the direction of the polarizations of the laser beams, and the detuning of the cooling laser.
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•Posted Content
Storage of quantum dynamics on quantum states: a quasi-perfect programmable quantum gate
Guifre Vidal,J. I. Cirac +1 more
TL;DR: In this article, it is shown how quantum dynamics can be captured in the state of a quantum system, in such a way that the system can be used to perform, at a later time, the stored transformation almost perfectly on some other quantum system.
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Error Propagation in NISQ Devices for Solving Classical Optimization Problems
TL;DR: In this paper , the authors proposed a random circuit model to analyze the impact of noise on the performance of variational quantum circuits for classical optimization problems, and showed that even with a small noise rate, the quality of the obtained classical optima is low on average and a single-qubit error rate of 1 /nD , where n is the number of qubits and D is the circuit depth, is needed for the possibility of a quantum advantage.
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