TY - JOUR
T1 - Tunable electromagnetic environment for superconducting quantum bits
AU - Jones, P.
AU - Huhtamäki, J.A.M.
AU - Salmilehto, J.
AU - Tan, K.Y.
AU - Möttönen, M.
PY - 2013
Y1 - 2013
N2 - We introduce a setup which realises a tunable engineered environment for experiments in circuit quantum electrodynamics. We illustrate this concept with the specific example of a quantum bit, qubit, in a high-quality-factor cavity which is capacitively coupled to another cavity including a resistor. The temperature of the resistor, which acts as the dissipative environment, can be controlled in a well defined manner in order to provide a hot or cold environment for the qubit, as desired. Furthermore, introducing superconducting quantum interference devices (SQUIDs) into the cavity containing the resistor, provides control of the coupling strength between this artificial environment and the qubit. We demonstrate that our scheme allows us to couple strongly to the environment enabling rapid initialization of the system, and by subsequent tuning of the magnetic flux of the SQUIDs we may greatly reduce the resistor-qubit coupling, allowing the qubit to evolve unhindered.
AB - We introduce a setup which realises a tunable engineered environment for experiments in circuit quantum electrodynamics. We illustrate this concept with the specific example of a quantum bit, qubit, in a high-quality-factor cavity which is capacitively coupled to another cavity including a resistor. The temperature of the resistor, which acts as the dissipative environment, can be controlled in a well defined manner in order to provide a hot or cold environment for the qubit, as desired. Furthermore, introducing superconducting quantum interference devices (SQUIDs) into the cavity containing the resistor, provides control of the coupling strength between this artificial environment and the qubit. We demonstrate that our scheme allows us to couple strongly to the environment enabling rapid initialization of the system, and by subsequent tuning of the magnetic flux of the SQUIDs we may greatly reduce the resistor-qubit coupling, allowing the qubit to evolve unhindered.
KW - circuit quantum electrodynamics
KW - superconducting qubits
KW - circuit quantum electrodynamics
KW - superconducting qubits
KW - circuit quantum electrodynamics
KW - superconducting qubits
UR - http://www.nature.com/srep/2013/130613/srep01987/full/srep01987.html
U2 - 10.1038/srep01987
DO - 10.1038/srep01987
M3 - Article
VL - 3
SP - 1
EP - 7
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
M1 - 1987
ER -