Selected Results

The following links contain short summaries of recently published papers.

M. Pechal  et al.,  Phys. Rev. X 4, 041010, published 17 October 2014

A coherent link between spatially separated nodes of a quantum network may be realized using itinerant photons as information carriers [1]. The necessary efficient absorption at the receiving node can be achieved by using a photon with a suitable temporal profile allowing time-reversal of the emission process [2].

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J. Basset et al., Applied Physics Letters 105, 063105, published  online 11 August 2014

In recent years, hybrid circuit QED devices consisting of semiconductor double quantum dots coupled to microwave cavities have attracted a lot of attention. However, an important milestone that has not been reach with these systems is the strong coupling regime of cavity QED.

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 T. Thiele et al., Phys. Rev. A 90, 013414, published 14 July  2014

Independent of the physical system, experiments that explore quantum mechanical effects at the single quantum limit need to fulfil a set of different criteria. Various systems such as neutral or charged atoms, superconducting circuits, nuclear spins, NV-centers or quantum dots, offer a diversity of physical properties to meet these requirements.

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A. F. van Loo et al., Science, published express 14 Nov 2013

Suppose you leave your house in Zurich early in the morning, and you set off walking in a random direction, without a compass, GPS or looking at the signs. What is the probability of ending up in your lab at ETH Zurich’s Hoenggerberg Campus? And what is your probability of ending up for example at the ETH main building? Either one is not very high, certainly.

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L. Steffen et al., Nature 500, 319, published 15 August 2013

Transferring the state of an information carrier between two parties is an essential primitive in both classical and quantum communication and information processing. Quantum teleportation describes the concept of transferring an unknown quantum state from a sender to a physically separated receiver without transmitting the physical carrier of information itself.

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