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06-11
2025
Enhancing quantum sensing sensitivity by a quantum memory
Abstract: In quantum sensing, precision is typically limited by the maximum time interval over which phase can be accumulated. Memories have been used to enhance this time interval beyond the coheren...
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06-11
2025
PSD rank and its applications in computer science and quantum physics
Abstract: Positive semidefinite (PSD) rank is a concept that was proposed recently to study the computational power of semidefinite programming, a problem in optimization theory. It turns out that it...
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06-11
2025
Statistical Mechanics with Trapped Ion Coulomb Crystals
Abstract: While thermodynamics of physical systems in equilibrium is well-understood, non-equilibrium statistical mechanics still poses many open questions both in the classical and the quantum world...
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06-11
2025
Quantum Journal Club: High Quality Stepped-impedance Resonators suitable for Circuit-QED Measurement of Superconducting Artificial Atoms
Abstract: High quality factor coplanar resonators are critical elements in superconducting quantum circuits. We describe the design, fabrication and measurement of stepped impedance resonators (SIRs)...
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06-11
2025
Quantum Information Science in a Complex World
Abstract: On outset, complexity and quantum information science appear quite different. One commonly deals with networks of interacting systems on the macroscopic scale, while the describes matter at...
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06-11
2025
Quantum Journal Club: Hybrid Quantum Circuit with a Superconducting Qubit Coupled to a Spin Ensemble
Abstract: We report the experimental realization of a hybrid quantum circuit combining a superconducting qubit and an ensemble of electronic spins. The qubit, of the transmon type, is coherently coup...