TY - JOUR
T1 - Quantum-noise theory for the resistively shunted josephson junction
AU - Koch, Roger H.
AU - Van Harlingen, D. J.
AU - Clarke, John
PY - 1980
Y1 - 1980
N2 - It is shown that the low-frequency spectral density of the voltage noise in a current-biased Josephson junction with critical current I0, shunt resistance R, and small capacitance is eI02R3πV in the limit eVkBT(II0)2 and I>I0, where V is the voltage and I is the current. The noise arises from zero-point current fluctuations in the shunt resistor. The rounding of the current-voltage characteristic caused by the quantum fluctuations and the effects of nonzero junction capacitance are calculated.
AB - It is shown that the low-frequency spectral density of the voltage noise in a current-biased Josephson junction with critical current I0, shunt resistance R, and small capacitance is eI02R3πV in the limit eVkBT(II0)2 and I>I0, where V is the voltage and I is the current. The noise arises from zero-point current fluctuations in the shunt resistor. The rounding of the current-voltage characteristic caused by the quantum fluctuations and the effects of nonzero junction capacitance are calculated.
UR - http://www.scopus.com/inward/record.url?scp=0000171526&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000171526&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.45.2132
DO - 10.1103/PhysRevLett.45.2132
M3 - Article
AN - SCOPUS:0000171526
SN - 0031-9007
VL - 45
SP - 2132
EP - 2135
JO - Physical review letters
JF - Physical review letters
IS - 26
ER -