A photonic platform for donor spin qubits in silicon.

ABSTRACT: Donor spins in silicon are highly competitive qubits for upcoming quantum technologies, offering complementary metal-oxide semiconductor compatibility, coherence (T₂) times of minutes to hours, and simultaneous initialization, manipulation, and readout fidelities near ~99.9%. This allows for many quantum error correction protocols, which will be essential for scale-up. However, a proven method of reliably coupling spatially separated donor qubits has yet to be identified. We present a scalable silicon-based platform using the unique optical properties of "deep" chalcogen donors. For the prototypical ⁷⁷Se⁺ donor, we measure lower bounds on the transition dipole moment and excited-state lifetime, enabling access to the strong coupling limit of cavity q

SUBMITTER: Morse KJ 

PROVIDER: S-EPMC5529058 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature