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Transmon qubit readout fidelity at the threshold for quantum error correction without a quantum-limited amplifier
Liangyu Chen, Hang-Xi Li, Yong Lu +17
High-fidelity and rapid readout of a qubit state is key to quantum computing and communication, and it is a prerequisite for quantum error correction. We present a readout scheme f…
Interaction between giant atoms in a one-dimensional structured environment
Ariadna Soro, Carlos Sánchez Muñoz, Anton Frisk Kockum
Giant atoms -- quantum emitters that couple to light at multiple discrete points -- are emerging as a new paradigm in quantum optics thanks to their many promising properties, such…
Gradient-descent quantum process tomography by learning Kraus operators
Shahnawaz Ahmed, Fernando Quijandría, Anton Frisk Kockum
We perform quantum process tomography (QPT) for both discrete- and continuous-variable quantum systems by learning a process representation using Kraus operators. The Kraus form en…