TY - JOUR
T1 - Prediction and retrodiction for a continuously monitored superconducting qubit
AU - Tan, D.
AU - Weber, S. J.
AU - Siddiqi, I.
AU - Mølmer, K.
AU - Murch, K. W.
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/3/5
Y1 - 2015/3/5
N2 - The quantum state of a superconducting transmon qubit inside a three-dimensional cavity is monitored by transmission of a microwave field through the cavity. The information inferred from the measurement record is incorporated in a density matrix ρt, which is conditioned on probe results until t, and in an auxiliary matrix Et, which is conditioned on probe results obtained after t. Here, we obtain these matrices from experimental data and we illustrate their application to predict and retrodict the outcome of weak and strong qubit measurements.
AB - The quantum state of a superconducting transmon qubit inside a three-dimensional cavity is monitored by transmission of a microwave field through the cavity. The information inferred from the measurement record is incorporated in a density matrix ρt, which is conditioned on probe results until t, and in an auxiliary matrix Et, which is conditioned on probe results obtained after t. Here, we obtain these matrices from experimental data and we illustrate their application to predict and retrodict the outcome of weak and strong qubit measurements.
UR - http://www.scopus.com/inward/record.url?scp=84924390529&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.114.090403
DO - 10.1103/PhysRevLett.114.090403
M3 - Article
AN - SCOPUS:84924390529
SN - 0031-9007
VL - 114
JO - Physical Review Letters
JF - Physical Review Letters
IS - 9
M1 - 090403
ER -