output
19912026
most citedAdvances in Quantum Metrology

3.9k citations

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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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Showing 2006 · quant-phShow all

19 papers · 2 filters

quant-ph2006★ 32 cited

Information-Disturbance Tradeoff in Quantum State Discrimination

Francesco Buscemi, Massimiliano F. Sacchi

When discriminating between two pure quantum states, there exists a quantitative tradeoff between the information retrieved by the measurement and the disturbance caused on the unk…

quant-ph2006★ 8 cited

Quantum erasure of decoherence

F. Buscemi, G. Chiribella, G. M. D'Ariano

We consider the classical algebra of observables that are diagonal in a given orthonormal basis, and define a complete decoherence process as a completely positive map that asympto…

quant-ph2006★ 1 cited

A minimum-disturbing quantum state discriminator

Francesco Buscemi, Massimiliano F. Sacchi

We propose two experimental schemes for quantum state discrimination that achieve the optimal tradeoff between the probability of correct identification and the disturbance on the…

quant-ph2006★ 18 cited

Applications of the group SU(1,1) for quantum computation and tomography

G. Chiribella, G. M. D'Ariano, P. Perinotti

This paper collects miscellaneous results about the group SU(1,1) that are helpful in applications in quantum optics. Moreover, we derive two new results, the first is about the ap…

quant-ph2006★ 40 cited

Optimal data processing for quantum measurements

Giacomo Mauro D'Ariano, Paolo Perinotti

We consider the general measurement scenario in which the ensemble average of an operator is determined via suitable data-processing of the outcomes of a quantum measurement descri…

quant-ph2006

Superbroadcasting of harmonic oscillators mixed states

G. M. D'Ariano, P. Perinotti, M. F. Sacchi

We consider the problem of broadcasting quantum information encoded in the displacement parameter for an harmonic oscillator, from N to M>N copies of a thermal state. We show the W…

quant-ph2006★ 3 cited

Superbroadcasting and classical information

G. Chiribella, G. M. D'Ariano, C. Macchiavello +2

We address the problem of broadcasting N copies of a generic qubit state to M>N copies by estimating its direction and preparing a suitable output state according to the outcome of…

quant-ph2006★ 19 cited

Secret quantum communication of a reference frame

Giulio Chiribella, Lorenzo Maccone, Paolo Perinotti

We propose quantum cryptographic protocols to secretly communicate a reference frame- unspeakable information in the sense it cannot be encoded into a string of bits. Two distant p…

quant-ph2006★ 43 cited

Quantum information becomes classical when distributed to many users

G. Chiribella, G. M. D'Ariano

Any physical transformation that equally distributes quantum information over a large number M of users can be approximated by a classical broadcasting of measurement outcomes. The…

quant-ph2006★ 18 cited

Quantum geometry and quantum algorithms

S. Garnerone, A. Marzuoli, M. Rasetti

Motivated by algorithmic problems arising in quantum field theories whose dynamical variables are geometric in nature, we provide a quantum algorithm that efficiently approximates…

quant-ph2006★ 13 cited

Quantum Knitting

S. Garnerone, A. Marzuoli, M. Rasetti

We analyze the connections between the mathematical theory of knots and quantum physics by addressing a number of algorithmic questions related to both knots and braid groups. Knot…

quant-ph2006★ 54 cited

Information-disturbance tradeoff in estimating a maximally entangled state

Massimiliano F. Sacchi

We derive the amount of information retrieved by a quantum measurement in estimating an unknown maximally entangled state, along with the pertaining disturbance on the state itself…

quant-ph2006★ 6 cited

Regimes of stability of accelerator modes

Rebecca Hihinashvili, Tali Oliker, Yaniv S. Avizrats +3

The phase diagram of a simple area-preserving map, which was motivated by the quantum dynamics of cold atoms, is explored analytically and numerically. Periodic orbits of a given w…

quant-ph2006★ 41 cited

Entropic information-disturbance tradeoff

Lorenzo Maccone

We show the flaws found in the customary fidelity-based definitions of disturbance in quantum measurements and evolutions. We introduce the "entropic disturbance" D and show that i…

quant-ph2006★ 2 cited

Interferometric tunability of the absorption

Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone

We propose an interferometric setup that permits to tune the quantity of radiation absorbed by an object illuminated by a fixed light source. The method can be used to selectively…

quant-ph2006★ 13 cited

Universal and phase covariant superbroadcasting for mixed qubit states

Francesco Buscemi, Giacomo Mauro D'Ariano, Chiara Macchiavello +1

We describe a general framework to study covariant symmetric broadcasting maps for mixed qubit states. We explicitly derive the optimal N to M superbroadcasting maps, achieving opt…

quant-ph2006★ 6 cited

Superbroadcasting of conjugate quantum variables

Giacomo M. D'Ariano, Paolo Perinotti, Massimiliano F. Sacchi

We consider the problem of broadcasting arbitrary states of radiation modes from N to M>N copies by a map that preserves the average value of the field and optimally reduces the to…

quant-ph2006★ 9 cited

Quantum automata, braid group and link polynomials

Silvano Garnerone, Annalisa Marzuoli, Mario Rasetti

The spin--network quantum simulator model, which essentially encodes the (quantum deformed) SU(2) Racah--Wigner tensor algebra, is particularly suitable to address problems arising…

quant-ph2006★ 37 cited

Decay of Quantum Accelerator Modes

Michael Sheinman, Shmuel Fishman, Italo Guarneri +1

Experimentally observable Quantum Accelerator Modes are used as a test case for the study of some general aspects of quantum decay from classical stable islands immersed in a chaot…