14.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR588 papers
- California Institute of TechnologyUS572 papers
- Massachusetts Institute of TechnologyUS568 papers
- University of MichiganUS494 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di NapoliIT453 papers
- Pennsylvania State UniversityUS448 papers
- University of Maryland, College ParkUS416 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR412 papers
- Max Planck Institute for Gravitational PhysicsDE394 papers
- National Institute for Subatomic PhysicsNL388 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT372 papers
- Goddard Space Flight CenterUS364 papers
15 papers · 2 filters
Rapid Measurement of Quantum Systems using Feedback Control
Joshua Combes, Howard M. Wiseman, Kurt Jacobs
We introduce a feedback control algorithm that increases the speed at which a measurement extracts information about a -dimensional system by a factor that scales as . Gene…
Hastening, delaying, or averting sudden death of quantum entanglement
A. R. P. Rau, Mazhar Ali, G. Alber
The finite time end of entanglement between two decohering qubits can be modified by local, unitary actions performed during the decohering process. Depending on the time when such…
Measured quantum probability distribution functions for Brownian motion
G. W. Ford, R. F. O'Connell
The quantum analog of the joint probability distributions describing a classical stochastic process is introduced. A prescription is given for constructing the quantum distribution…
Rapid-purification protocols for optical homodyning
Aravind Chiruvelli, Kurt Jacobs
We present a number of rapid-purification feedback protocols for optical homodyne detection of a single optical qubit. We derive first a protocol that speeds up the rate of increas…
Coherent Communication with Linear Optics
Mark M. Wilde, Todd A. Brun, Jonathan P. Dowling +1
We show how to implement several continuous-variable coherent protocols with linear optics. Noise can accumulate when implementing each coherent protocol with realistic optical dev…
Loss of entanglement in quantum mechanics due to the use of realistic measuring rods
Rodolfo Gambini, Rafael A. Porto, Jorge Pullin
We show that the use of real measuring rods in quantum mechanics places a fundamental gravitational limit to the level of entanglement that one can ultimately achieve in quantum sy…
Strong violations of Bell-type inequalities for Werner-like states
Christoph F. Wildfeuer, Jonathan P. Dowling
We investigate the violation of Bell-type inequalities for two-qubit Werner-like states parametrized by the positive parameter 0<p<1. We use an unbalanced homodyne detection scheme…
Energy Measurements and Preparation of Canonical Phase States of a Nano-Mechanical Resonator
Kurt Jacobs, Andrew N. Jordan, Elinor K. Irish
We show that a continuous quantum non-demolition measurement of the energy of a nanomechanical resonator can be achieved by monitoring the resonator with a quantum point contact vi…
Generating Entangled Photons from the Vacuum by Accelerated Measurements: Quantum Information Theory Meets the Unruh-Davies Effect
Muxin Han, S. Jay Olson, Jonathan P. Dowling
Building on the well-known Unruh-Davies effect, we examine the effects of projective measurements and quantum communications between accelerated and stationary observers. We find t…
Generation of Large Number-Path Entanglement Using Linear Optics and Feed-Forward
Hugo Cable, Jonathan P. Dowling
We show how an idealised measurement procedure can condense photons from two modes into one, and how, by feeding forward the results of the measurement, it is possible to generate…
Quantum thermodynamic functions for an oscillator coupled to a heat bath
G. W. Ford, R. F. O'Connell
Small systems (of interest in the areas of nanophysics, quantum information, etc.) are particularly vulnerable to environmental effects. Thus, we determine various thermodynamic fu…
Exact diagonalization for spin-1/2 chains and the first order quantum phase transitions of the XXX chain in a uniform transverse field
Feng Pan, Xin Guan, Nan Ma +2
A simple Mathematica code based on the differential realization of hard-core boson operators for finding exact solutions of the periodic-N spin-1/2 systems with or beyond nearest n…
Quantum communication via a continuously monitored dual spin chain
Kosuke Shizume, Kurt Jacobs, Daniel Burgarth +1
We analyze a recent protocol for the transmission of quantum states via a dual spin chain [Burgarth and Bose, Phys. Rev. A 71, 052315 (2005)] under the constraint that the receiver…
Strongly-Driven One-Atom Laser and Decoherence Monitoring
P. Lougovski, F. Casagrande, A. Lulli +1
We propose the implementation of a strongly-driven one-atom laser, based on the off-resonant interaction of a three-level atom in -configuration with a single cavity mode and th…
Feedback Control of Non-linear Quantum Systems: a Rule of Thumb
Kurt Jacobs, Austin P. Lund
We show that in the regime in which feedback control is most effective -- when measurements are relatively efficient, and feedback is relatively strong -- then, in the absence of a…