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12-01
2023
Learning quantum states and unitaries of bounded gate complexity
Abstract: While quantum state tomography is notoriously hard, most states hold little interest to practically-minded tomographers. Given that states and unitaries appearing in Nature are of bounded g...
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11-02
2023
SU(d)-symmetric local random quantum circuits — Designs, information scrambling, error correction, and machine learning
Abstract: The convergence of local unitary circuit ensembles to k-designs is a central problem in random quantum circuit models which play key roles in the study of quantum information as well as phy...
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10-26
2023
Complexity and order in approximate quantum error-correcting codes
Abstract: Quantum codes achieving approximate quantum error correction (AQEC) are useful, often fundamentally important, from both practical and physical perspectives but remain little understood. In...
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10-19
2023
Quantum simulations on an analog-digital trapped-ion quantum system
Abstract: Our quantum experiment consists of a chain of 171Yb+ ions with individual Raman beam addressing and individual readout. This fully connected system can be configured to run any sequence of ...
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09-28
2023
fermion-to-qubit mappings in two spatial dimensions
Abstract: The talk discusses the relationship between fermionic observables and Pauli matrices on two-dimensional lattices. First, it will introduce the exact bosonization method. It is argued that a...
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09-21
2023
Characterizing the ultimate potential and limitations of quantum error mitigation
Abstract: The inevitable accumulation of errors in near-future quantum devices represents a key obstacle in delivering practical quantum advantages, motivating the development of various quantum erro...