Ultrafast coherent excitation of a trapped ion qubit for fast gates and photon frequency qubits.
نویسندگان
چکیده
We demonstrate ultrafast coherent excitation of an atomic qubit stored in the hyperfine levels of a single trapped cadmium ion. Such ultrafast excitation is crucial for entangling networks of remotely located trapped ions through the interference of photon frequency qubits, and is also a key component for realizing ultrafast quantum gates between Coulomb-coupled ions.
منابع مشابه
Controlled Coherent Excitations in a Single Cadmium Ion with an Ultrafast Laser
Coherent transitions between quantum states form the basis for quantum computation algorithms. We demonstrate the coherent drive of a qubit state stored in hyperfine states of a single trapped cadmium ion to an electronically excited state with a laser pulse short compared to the lifetime of the excited state. The transitions are demonstrated by observation of Rabi flopping with pulses of varyi...
متن کاملQuantum Information Processing with Trapped Ion Chains
Title of dissertation: QUANTUM INFORMATION PROCESSING WITH TRAPPED ION CHAINS Timothy Andrew Manning, Doctor of Philosophy, 2014 Dissertation directed by: Professor Christopher Monroe Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology Trapped atomic ion systems are currently the most advanced platform for quantum information ...
متن کاملProbabilistic quantum gates between remote atoms through interference of optical frequency qubits
Entangled quantum states, at the heart of quantuminformation processing, are notoriously difficult to generate and control. Generating entangled states becomes dramatically simpler when the entanglement operations are allowed to succeed with only a finite perhaps small probability, as long as it is known when the operations succeed 1–5 . If entangling gates can be implemented in such a probabil...
متن کاملCoherent error suppression in multiqubit entangling gates.
We demonstrate a simple pulse shaping technique designed to improve the fidelity of spin-dependent force operations commonly used to implement entangling gates in trapped ion systems. This extension of the Mølmer-Sørensen gate can theoretically suppress the effects of certain frequency and timing errors to any desired order and is demonstrated through Walsh modulation of a two qubit entangling ...
متن کاملOptimal quantum control of multimode couplings between trapped ion qubits for scalable entanglement.
We demonstrate entangling quantum gates within a chain of five trapped ion qubits by optimally shaping optical fields that couple to multiple collective modes of motion. We individually address qubits with segmented optical pulses to construct multipartite entangled states in a programmable way. This approach enables high-fidelity gates that can be scaled to larger qubit registers for quantum c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review letters
دوره 97 4 شماره
صفحات -
تاریخ انتشار 2006