QUIE2T Quantum Information Entanglement-Enabled Technologies

 - Quantum key distribution with continuous variables: theoretical and experimental work on long-distance system performance and side channel induced attacks

- Quantum cryptographic primitives: theoretical and experimental work on secret sharing, coin flipping, entanglement verification in the presence of adversaries

- Theory of Quantum Computation and Quantum Information including measurement-based quantum computing, entanglement theory and foundations of physics

 QuintessenceLabs Pty Ltd is a deep technology company incorporated in 2006 to commercialise breakthrough information security systems premised on the practical application of advanced quantum physics. The company comprises world-class scientific talent and has established an international network of commercialisation and technical talent. QuintessenceLabs aims to be the global leading supplier of OEM quantum communications technology to networking, communications and defense companies.

 CriptoCam s.r.l. has been founded in 2008 by a group of researchers from physics, engineering and computer science to promote QKD and to provide consultancy, services and products for the Companies and/or Institutions interested in this field.

SELEX Sistemi Integrati, a Finmeccanica company, designs and develops Large Systems for Homeland Protection, systems and radar for air defence, battlefield management, naval warfare, air traffic control, coastal and maritime surveillance.The Company with about 4,200 employees has fifty years of experience in system integration and a customer base in no less than 150 countries. Chief scientist, Fabio Bovino, of the Optics group is leading the efforts in quantum cryptography.

We experimentally demonstrate a detection scheme suitable for state analysis of single optically trapped atoms in less than 1  μs with an overall detection efficiency η exceeding 98%. The method is based on hyperfine-state-selective photoionization and subsequent registration of the correlated photoion-electron pairs by coincidence counting via two opposing channel electron multipliers.

 QICC-Key Sessions:

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Quantum mechanics offers new possibilities to process and transmit information. In recent years, algorithms and cryptographic protocols exploiting the superposition principle and the existence of entangled states have been designed. They should allow us to realize communication and computational tasks that outperform any classical strategy. Here we show that quantum mechanics also provides fresh perspectives in the field of random networks.

Quantum many-body systems

Bell inequalities, non-locality and communication complexity

Quantum channels

Spin chains have long been considered as candidates for quantum channels to facilitate quantum communication. We consider the transfer of a single excitation along a spin-1/2 chain governed by Heisenberg-type interactions. We build on the work of Balachandran and Gong [V. Balachandran and J. Gong, Phys. Rev. A 77, 012303 (2008)] and show that by applying optimal control to an external parabolic magnetic field, one can drastically increase the propagation rate by two orders of magnitude.

• ion trapping
• atom trapping
• entangled photons
• atom-photon interfaces
• single-photon sources
• cavity QED
• laser cooling