Intel Horse Ridge
Intel "Horse Ridge" is a cryogenic control chip, presented at the International Solid State Circuits Conference 2020 of San Francisco.[1] [2] [3]
Horse Ridge is based on Intel's 22nm FFL (FinFET Low Power) CMOS technology, and features four radiofrequency (RF) channels in a single 4-by-4-millimeter device and leverages frequency multiplexing to control up to 128 qubits. Each RF channel uses direct digital synthesis with 32 numerically controlled oscillators to generate each of the 32 multiplexed qubit frequencies with high precision of 200 Hz. It integrates SRAM, digital core and analog/RF circuity into a single package to manipulate the state of the qubits in a quantum system with microwave pulses.[4] [5]
The amplitude and phase modulation information for pulse shaping (18 Gb/s) is stored in on-chip SRAM, allowing envelopes up to 41μs, which are referenced by a look-up table (LUT) that can define 8 instructions per qubit.
Intel and QuTech have published a study in Nature in which they demonstrate that they have been able to control the so-called "hot qubits", that is, ensuring their operation at temperatures above 1 degree Kelvin (-272.15 degrees Celsius).[6]
In December 2020, Intel released Horse Ridge II, adding enhanced capabilities and higher levels of integration for sophisticated control of the quantum system. New features include the ability to manipulate and read qubit states (and drive up to 16 spin qubits with a direct digital synthesis (DDS) architecture) and control the potential of multiple gates needed to correlate multiple qubits (features 22 high-speed digital-to-analog converters (DACs)). Horse Ridge II is implemented using Intel's low-power 22nm FinFET technology (22FFL) and its operation has been tested at a temperature of 4° kelvin. [7]
References[edit]
- ↑ "Intel and QuTech Unveil Details of First Cryogenic Quantum Computing Control Chip, 'Horse Ridge'". Intel Newsroom.
- ↑ "Intel creates chip to control quantum computers".
- ↑ "Intel Introduces 'Horse Ridge' to Enable Commercially Viable Quantum Computers". AP NEWS. December 9, 2019.
- ↑ https://newsroom.intel.com/wp-content/uploads/sites/11/2020/02/Intel-ISSCC-Horse-Ridge-Fact-Sheet.pdf
- ↑ https://venturebeat.com/2020/02/18/intel-and-qutech-unveil-horse-ridge-cryogenic-control-chip-for-quantum-computing/
- ↑ https://www.nature.com/articles/s41586-020-2170-7
- ↑ https://www.eetimes.com/intels-horse-ridge-ii-improves-the-control-for-quantum-computing/
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