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12-22
2016
Quantum Journal Club: Implementing a Universal Gate Set on a Logical Qubit Encoded in an Oscillator
Abstract: A logical qubit is a two-dimensional subspace of a higher dimensional system, chosen such that it is possible to detect and correct the occurrence of certain errors [1]. Manipulation of the...
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12-22
2016
Quantum Journal Club: Observation of the Efimovian expansion in scale-invariant Fermi gases
Abstract: Scale invariance plays an important role in unitary Fermi gases. Discrete scaling symmetry manifests itself in quantum few-body systems such as the Efimov effect. Here, we report on the the...
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12-22
2016
Quantum Journal Club: Room-Temperature Quantum Bit Storage Exceeding 39 Minutes Using Ionized Donors in Silicon-28
Abstract: Quantum memories capable of storing and retrieving coherent information for extended times at room temperature would enable a host of new technologies. Electron and nuclear spin qubits usin...
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12-15
2016
Quantum Journal Club: Description of quantum coherence in thermodynamic processes requires constraints beyond free energy
Abstract: Recent studies have developed fundamental limitations on nanoscale thermodynamics, in terms of a set of independent free energy relations. Here we show that free energy relations cannot pro...
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12-08
2016
Quantum Journal Club: Josephson effect in fermionic superfluids across the BEC-BCS crossover
Abstract: The Josephson effect is a macroscopic quantum phenomenon that reveals the broken symmetry associated with any superfluid state. Here we report on the observation of the Josephson effect bet...
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12-08
2016
Quantum Journal Club: Storage Enhanced Nonlinearities in a Cold Atomic Rydberg Ensemble
Abstract: The combination of electromagnetically induced transparency with the nonlinear interaction between Rydberg atoms provides an effective interaction between photons. In this Letter, we invest...