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Authors:
C. Wiechers, L. Lydersen, C. Wittmann, D. Elser, J. Skaar, C. Marquardt, V. Makarov, and G. Leuchs
We present a method to control the detection events in quantum key distribution systems that use gated single-photon detectors. We employ bright pulses as faked states, timed to arrive at the avalanche photodiodes outside the activation time. The attack can remain unnoticed, since the faked states do not increase the error rate per se. This allows for an intercept–resend attack, where an eavesdropper transfers her detection events to the legitimate receiver without causing any errors.
Submitted by
Burgarth on Fri, 04/02/2011 - 12:35.
Submitted by
JMiszczak on Wed, 02/02/2011 - 09:28.
The electronic chips of the future might not be made of silicon or even graphene but of a material called molybdenite (MoS2). EU-funded research presented in the journal Nature Nanotechnology demonstrates that molybdenite is a highly effective semi-conductor that could be used to make transistors both smaller and more energy efficient.
Submitted by
Jbarrett on Tue, 01/02/2011 - 21:27.
Application deadline:
Monday, February 28, 2011
PhD project in quantum information and the foundations of quantum theory.
A fully funded PhD position is available for a UK/EU student, project title "Quantum theory and the nature of time". This position is partially supported by a large grant from the Foundational Questions Institute. The aim is to investigate the connections between the mathematical formalism of quantum theory and facts about time, such as reversibility and irreversibility of physical laws. For more details, including an introduction and technical abstract, see here:
Submitted by
JMiszczak on Tue, 01/02/2011 - 14:10.
The purpose of this conference is to provide a technical forum for discussions in the latest developments in quantum-physics-based information security. Traditional approaches to information security rely on mathematical relationships associated with encryption keys and encryption algorithms to achieve practical security. Quantum computing is considered to be an emerging threat to these classical techniques.
Submitted by
JMiszczak on Tue, 01/02/2011 - 10:59.
We invite applications for an interdisciplinary postdoctoral position in quantum information theory and quantum gravity, starting in the fall of 2011. The successful candidate will be hosted by the Quantum Gravity group at the Max Planck Institute (Albert Einstein Institute) for Gravitational Physics, Potsdam, Germany (http://www.aei.mpg.de/), and co-hosted by the Quantum Information Theory at the University of Potsdam (http://www.jense.qipc.org/).
Submitted by
JMiszczak on Tue, 01/02/2011 - 10:57.
Quantum Information Science is one of the most dynamic areas of inter-disciplinary research involving a wide range of scientists ranging from physicists to computer scientists to mathematicians and engineers. The fundamental observation in this field is that any computation is essentially a physical process. The current relentless drive towards increasing speed and miniaturization of computers will eventually lead the computer industry into a molecular/atomic domain where seemingly strange quantum behavior takes over from familiar classical notions.
Submitted by
Fernholz on Mon, 31/01/2011 - 16:50.
Application deadline:
Sunday, February 27, 2011
Applications are invited for a postdoctoral position at the University of Nottingham, UK. The Ultracold Atoms Group is the youngest group in the School of Physics and Astronomy. It is part of the Midlands Ultracold Atom Research Centre (MUARC), formed together with the Cold Atoms Group at The University of Birmingham. We started our work in 2008 and now have several laboratory setups with ultra-cold atomic gases.
Submitted by
JMiszczak on Fri, 28/01/2011 - 09:56.
James Dacey writes at PhysicsWorld: ''An international research group claims to have taken an essential step towards silicon-based quantum computing by entangling 10 billion identical quantum bits, or "qubits", inside a silicon crystal. This is the first time that "ensemble entanglement" has been demonstrated in a solid-state device, they claim. Where conventional computers store data as "bits" with value 1 or 0, in quantum computing data is stored as "qubits", which can hold more than one value at the same time.
Submitted by
JMiszczak on Thu, 27/01/2011 - 13:43.
Application deadline:
Thursday, February 17, 2011
Postdoctoral Research Fellow in Theoretical Cold Atom Physics (and QIP)
Dept. of Physics & Astronomy
University of Sussex
Ref 131, Deadline 18 February 2011.
A 5-year post-doc position is available for research funded by the EPSRC in the project "Devices based on Entanglement in Cold Arrays of Trapped Atoms". The project is led by Dr. Barry Garraway and located in the AMO research group at the University of Sussex.
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