entanglement
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A Classical Analogue of Entanglement
White Paper We show that quantum entanglement has a very close classical analogue, namely secret classical correlations. The fundamental analogy stems from the behavior of quantum entanglement under local operations... [10 Apr 2008]
A Quantum Treatment of Public Goods Economics
White Paper With many players, such quantum games can involve entanglement among many states which is difficult to implement, especially if the states must be communicated over some distance. This paper describes a quantum approach... [07 Nov 2007]
Entanglement Generation in Persistent Current Qubits
White Paper This paper investigates the generation of entanglement between two persistent current qubits. This paper considers the use of classical and quantum representations for the qubit control fields and how fluctuations in the... [07 Oct 2004]
SCO signs up first Linux licensee
News SCO sued IBM for improving Linux, seeking more than $5bn in damages, but that's not the only legal entanglement. A pragmatic analysis led the chief executive of EV1Servers.net to buy a licence that protects the website... [02 Mar 2004]
Concentrating Entanglement by Local Actions - Beyond Mean Values
White Paper Previous investigations of entanglement manipulations have focused on the average properties of the outcomes and little is known about the actual probability distribution. Consequently, the most general (multi-step... [25 Feb 2004]
On Multi-Particle Entanglement
White Paper We build, using group-theoretic methods, a general framework for approaching multi-particle entanglement. As far as entanglement is concerned, two states of n spin -1/2 particles are equivalent if they... [25 Feb 2004]
Mixed State Entanglement: Manipulating Polarisation- Entangled Photons
White Paper There has been much discussion recently regarding entanglement transformations in terms of local filtering operations and whether the optimal entanglement for an arbitrary two-qubit state could be realised. [25 Feb 2004]
Qudit Quantum State Tomography
White Paper From this reconstructed density matrix, relevant quantum information quantities such as the degree of entanglement and entropy can be calculated. Recently quantum tomography has been proposed as a fundamental tool for... [25 Feb 2004]
On the Measurement of Qubits
White Paper In addition a detailed error analysis is presented, allowing errors in quantities derived from the density matrix, such as the entropy or entanglement of formation, to be estimated. We describe in detail the theory... [25 Feb 2004]
Violations of Local Realism by Two Entangled quNits
White Paper This is surprising, since entanglement itself is robust. Results obtained in two recent papers, seem to indicate that the nonlocal character of the correlations between the outcomes of measurements performed on entangled... [25 Feb 2004]
Tandem Connection Monitoring - Who Has Caused the Impairment?
White Paper International joint ventures and new urban network operators are increasing the degree of entanglement as more and more communication resources are leased. Global liberalization in the telecom sector has lead to a... [25 Feb 2004]
Desktop chaos: PC cables reach halfway to the moon
News One in four respondents said they had damaged or soiled items on the desktop because of cable entanglement, or had to stop working because of tangled cords. Lay all the desktop cables in the United States end to end, and... [28 Apr 2003]
Aussie boffins make teleportation breakthrough
News The Australian experiment makes use of quantum entanglement, which can physically separate particles. Australian boffins have made further strides on teleportation techniques. The scientists managed to teleport a laser... [19 Jun 2002]
