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05-08
2015
Quantum Journal Club: Coherent control of a classical nanomechanical two-level s
Abstract: The Bloch sphere is a generic picture describing the coherent dynamics of coupled classical or quantum-mechanical twolevel systems under the control of electromagnetic fields1,2. It is comm...
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09-11
2023
Two-dimensional trapped ion crystals, micromotion and qubit state detection
Abstract: To study potential avenues for scaling up trapped ion crystal size, we built a modified Paul trap with an oblate aspect ratio designed for trapping radial 2-d ion crystals. In this geometry...
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05-21
2013
Quantum-limited measurement of magnetic-field gradient using entangled atoms
Abstract: I will introduce a new method on how to surpass the standard quantum limit for detecting the magnetic-field gradient by using entangled atoms. In addition, I will briefly discuss how to cre...
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12-01
2021
Hiding and masking quantum information in complex and real quantum mechanics
Abstract: Classical information can be completely hidden in the correlations of bipartite quantum systems. However, it is impossible to hide or mask all quantum information according to the no-hiding...
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04-04
2014
Quantum Nonlinear Optics Using Quantum Memory
Abstract: Large nonlinearity at the single-photon level can pave the way for the implementation of universal quantum gates. However, realizing large and noiseless nonlinearity at such low light level...
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09-07
2015
Device-independent entanglement characterizations and beyond
Abstract: Entanglement characterization is a preliminary step in the implementation of many quantum information processing tasks. In this talk, I will describe some recent progress on the possibility...