Title :
Phase and Amplitude Modulator for Microwave Pulse Generation
Author :
Brummer, G. ; Rafique, R. ; Ohki, T.A.
Author_Institution :
Raytheon BBN Technol., Cambridge, MA, USA
fDate :
6/1/2011 12:00:00 AM
Abstract :
We present a microwave amplitude/phase modulation device based on superconducting resonator and synthetic transmission line technology. The primary benefits of this device are agile frequency response for modulation over a 2 GHz bandwidth, low power dissipation and potential for integration with superconducting qubits and high-speed SFQ logic. This device demonstrates phase modulation of >; 90°, and amplitude modulation of ≈ 30 dB in a 2 GHz local oscillator bandwidth. We also show modulation of a 3.5 GHz microwave signal by a Gaussian pulse with σ ≈ 4 ns . The targeted application of this technology is for low power microwave pulse generation for qubit applications. In this paper we present results for the modulator and introduce potential applications in quantum computing.
Keywords :
amplitude modulation; phase modulation; quantum computing; superconducting mixers; superconducting resonators; Gaussian pulse; agile frequency response; amplitude modulator; frequency 2 GHz; frequency 3.5 GHz; high-speed SFQ logic; local oscillator bandwidth; low power microwave pulse generation; microwave amplitude/phase modulation device; phase modulator; quantum computing; qubit applications; superconducting qubits; superconducting resonator; synthetic transmission line technology; Inductance; Microwave circuits; Modulation; Phase shifters; Superconducting microwave devices; Transmission line measurements; High-speed tuning; low-temperature superconductor (LTS); tunable filter; tunable inductance;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2091485