Quantum Memory: A Missing Piece in Quantum Computing Units
- URL: http://arxiv.org/abs/2309.14432v2
- Date: Thu, 2 Nov 2023 18:14:58 GMT
- Title: Quantum Memory: A Missing Piece in Quantum Computing Units
- Authors: Chenxu Liu, Meng Wang, Samuel A. Stein, Yufei Ding, Ang Li
- Abstract summary: We provide a full design stack view of quantum memory devices.
We review two types of quantum memory devices: random access quantum memory (RAQM) and quantum random access memory (QRAM)
Building on top of these devices, quantum memory units in the computing architecture, including building a quantum memory unit, quantum cache, quantum buffer, and using QRAM for the quantum input-output module, are discussed.
- Score: 23.256454991183702
- License: http://creativecommons.org/licenses/by-sa/4.0/
- Abstract: Memory is an indispensable component in classical computing systems. While
the development of quantum computing is still in its early stages, current
quantum processing units mainly function as quantum registers. Consequently,
the actual role of quantum memory in future advanced quantum computing
architectures remains unclear. With the rapid scaling of qubits, it is
opportune to explore the potential and feasibility of quantum memory across
different substrate device technologies and application scenarios. In this
paper, we provide a full design stack view of quantum memory. We start from the
elementary component of a quantum memory device, quantum memory cells. We
provide an abstraction to a quantum memory cell and define metrics to measure
the performance of physical platforms. Combined with addressing functionality,
we then review two types of quantum memory devices: random access quantum
memory (RAQM) and quantum random access memory (QRAM). Building on top of these
devices, quantum memory units in the computing architecture, including building
a quantum memory unit, quantum cache, quantum buffer, and using QRAM for the
quantum input-output module, are discussed. We further propose the programming
model for the quantum memory units and discuss their possible applications. By
presenting this work, we aim to attract more researchers from both the Quantum
Information Science (QIS) and classical memory communities to enter this
emerging and exciting area.
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