Details

Autor(en) / Beteiligte

• Takeuchi, N.
• Yamanashi, Y.
• Yoshikawa, N.

Titel

Simulation of sub- k B T bit-energy operation of adiabatic quantum-flux-parametron logic with low bit-error-rate

Ist Teil von

• Applied physics letters, 2013-08, Vol.103 (6)

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Adiabatic quantum-flux-parametron (AQFP) logic can achieve high energy-efficiency. The bit energy and bit-error-rate (BER) of AQFP gates with under-damped Josephson junctions were simulated. The results indicate that the bit energy reaches 12 yJ, which is only 20% of the thermal energy at 4.2 K, using unshunted 50-μA junctions and excitation currents with a rise/fall time of 2000 ps. Although the bit energy is extremely small, the bias margin, where the BER is less than 10−23, is approximately ±22%. These results indicate there is no minimum energy limitation for the operation of AQFP gates unless the entropy of the system decreases.