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20022009
most citedQuantum ESPRESSO: a modular and open-source software project for quantum simulations of materials

29.3k citations

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8 papers · 1 filter

quant-ph2005

Can a "Hidden Variable'' Quantum Theory Evade the "No-Cloning" Theorem?

Kirk T. McDonald

If YES, then we can look forward to physical realization of superluminal communication, as the original considerations of the ``no-cloning'' theorem were motivated in part as an ex…

quant-ph200555 cited

Measurement of the separation between atoms beyond diffraction limit

Jun-Tao Chang, Joerg Evers, Marlan O. Scully +1

Precision measurement of small separations between two atoms or molecules has been of interest since the early days of science. Here, we discuss a scheme which yields spatial infor…

quant-ph200515 cited

Spectral Narrowing via Quantum Coherence

Eugeniy E. Mikhailov, Vladimir A. Sautenkov, Yuri V. Rostovtsev +4

We have studied the transmission of an optically thick Rb vapor that is illuminated by monochromatic and noise broaden laser fields in Lambda configuration. The spectral width of t…

quant-ph2004

Encoding a qubit into multilevel subspaces

Matthew Grace, Constantin Brif, Herschel Rabitz +3

We present a formalism for encoding the logical basis of a qubit into subspaces of multiple physical levels. The need for this multilevel encoding arises naturally in situations wh…

quant-ph20033 cited

Can quantum cryptography imply quantum mechanics? Reply to Smolin

Hans Halvorson, Jeffrey Bub

Clifton, Bub, and Halvorson (CBH) have argued that quantum mechanics can be derived from three cryptographic, or broadly information-theoretic, axioms. But Smolin disagrees, and he…

quant-ph200311 cited

On the power of Ambainis's lower bounds

Shengyu Zhang

The polynomial method and the Ambainis's lower bound (or \emph{Alb}, for short) method are two main quantum lower bound techniques. While recently Ambainis showed that the polynomi…