Implementation of molecular spin quantum computing by pulsed ENDOR technique: Direct observation of quantum entanglement and spinor
✍ Scribed by Kazunobu Sato; Robabeh Rahimi; Nobuyuki Mori; Shinsuke Nishida; Kazuo Toyota; Daisuke Shiomi; Yasushi Morita; Akira Ueda; Shuichi Suzuki; Ko Furukawa; Toshikazu Nakamura; Masahiro Kitagawa; Kazuhiro Nakasuji; Mikio Nakahara; Hideyuki Hara; Patrick Carl; Peter Höfer; Takeji Takui
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 236 KB
- Volume
- 40
- Category
- Article
- ISSN
- 1386-9477
No coin nor oath required. For personal study only.
✦ Synopsis
Pulsed electron nuclear double resonance (ENDOR) spin technology has been invoked for realization of a quantum computer (QC). Sample preparation of molecular spins, quantum operations, and measurements have been performed successfully, showing that ENDOR QC is feasible. We have employed a typical stable organic open-shell entity, malonyl radical, for pulsed ENDOR-based QC experiments. Time proportional phase incrementation (TPPI) technique was applied in order to characterize entangled states. The appearance of the entanglement between electron and nuclear spins was discussed based on the pulsed ENDOR-QC experiments with the TPPI detection. The generated entangled state was operated by both the microwave and RF pulses, demonstrating the appearance of a spinor property with four-p periodicity due to electron spin-1/2, in a straightforward manner for the first time. Interconversion from one entangled state to the other one via quantum operation was demonstrated.