S. Kundu

A twofold quantum delayed-choice experiment in a superconducting circuit

2017 · Science Advances

Wave-particle complementarity lies at the heart of quantum mechanics. To illustrate this mysterious feature, Wheeler proposed the delayed-choice experiment, where a quantum system manifests the wave- or particle-like attribute, depending on the experimental arrangement, which …

Single-shot readout of a superconducting qubit using a thermal detector

2024 · Nature Electronics

Abstract Measuring the state of a qubit is a key fundamental operation of a quantum computer. High-fidelity single-shot readout of superconducting qubits can be achieved using parametric amplifiers at millikelvin temperatures. However, scaling parametric amplifiers …