Quantum PhysicsSpin qubits hosted in silicon (Si) quantum dots (QD) are attractive due to their exceptionally long coherence times and compatibility with the silicon transistor platform. To achieve electrical control of spins for qubit scalability, recent experiments have utilized gradient magnetic ...
Schematic diagram of typical electrically measured spin qubit devices. Red (blue) spins and energy levels refer to electron (nuclear) spins.aA double quantum dot device defined in a Si/SiGe quantum well. Quantum dots can be defined either in accumulation mode with a global top gate as depicted...
S. ZUBAIRY is the structure of the effective single-qubit Hamilton operator, with Ω(t) ∝ B(t) being externally controlled by the experimenter. By sui...J. Schleimann and D. Loss, “Entanglement and quantum gate operations with spin-qubits in quantum dots,” cond-mat/0110150 (2001)....
In 1998, Loss and DiVincenzo published the seminal work ‘quantum computation with quantum dots’. In their original work, hopping of spins was proposed as a basis for qubit logic, but an experimental implementation has remained lacking. After more than 20 years, experiments have caught up with ...
We propose a resonator-assisted entangling gate for spin qubits with high fidelity. Each spin qubit corresponds to two electrons in a nanowire double quantum dot, with the singlet and one of the triplets as the logical qubit states. The gate is effected by virtual charge dipole transitions. We...
Robust electron spin qubit control in a nanowire double quantum dotPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences (IF 4.3)Runyu Lu, Kaipeng Liu, Yue Ban Pub Date: 2022-11-07 Entangling a Hole Spin with a Time-Bin Photon: A Waveguide Approach...
qubit device architecture, fabricated in HRL’s Malibu cleanroom, to trap single electrons in quantum dots. Spins of three such single electrons host energy-degenerate qubit states, which are controlled by nearest-neighbor contact interactions that partially swap spin states with those of their ...
The quantum bits used in the remainder of this work, are individual electron (Chaps. 3–5 and 7) or hole spins (Chap. 6) in self-assembled quantum dots [1, 2]. Spins, either as direct spin-1/2 particles or as pseudospin-submanifolds of larger systems, are generally considered as good...
the Tunnel Falls 12 qubit device has a95% yield rate across the waferand voltage uniformity similar to a CMOS logic process, and each wafer provides over 24,000 quantum dot devices. These 12-dot chips can form between four to 12 qubits that can be isolated and used in operations simultaneo...
the Tunnel Falls 12 qubit device has a95% yield rate across the waferand voltage uniformity similar to a CMOS logic process, and each wafer provides over 24,000 quantum dot devices. These 12-dot chips can form between four to 12 qubits that can be isolated and used in operations simultaneo...