"Time-Optimal Universal Manipulation of Two-Level Systems under Strong Driving" |
| סוג | Special Seminar - Solid State Institute, Technion |
| מרצה: | Mr. Chen Avinadav |
| שיוך: | The Physics Department and the Solid State Institute, Technion |
| תאריך: | 15.01.2014 |
| שעה: | 12:30 |
| מיקום: | Solid State Auditorium(Entrance) |
| הערה: | M.Sc. Student of Professor David Gershoni |
| תקציר: | Two-level systems are the prototypical realization of a quantum bit (qubit), and as such, their coherent control is a key element in novel quantum devices and applications. In this work we study, theoretically and experimentally, the time-optimal construction of arbitrary single-qubit rotations, under a single, strong driving field of finite amplitude. We propose and realize a strongly-driven spin system using radiation-dressed states of nitrogen-vacancy centers in diamond, which are driven four times faster than their Larmor frequency. We implement and characterize the designed time-optimal universal gates on this system, and use these gates to demonstrate a dualaxis dynamical decoupling sequence with pulses at sub-Larmor time scales. |