Amazon patents method to clean up quantum memory errors
Amazon has filed a patent for a technique to make quantum random access memory (QRAM) more reliable by fixing errors before data is accessed. The process involves creating multiple copies of a faulty quantum state, combining them to create a single high-quality state, and then using quantum teleportation to move that clean state into the main memory. A classical computer then calculates small corrections needed to ensure the final data is accurate.
In the filing’s own words
A distillation-teleportation protocol for fault-tolerant quantum random access memory (QRAM) is provided. The protocol may include preparing multiple copies of a faulty physical QRAM resource state. The physical resource states may then be encoded into respective encoded logical resource states, which can then be distilled into a single high-fidelity logical resource state. The high-fidelity logical resource state may then be quantum teleported to enact a logical QRAM gate, up to a correction which can be computed classically.
What exactly they claim (claim 1)
1. A method, comprising: applying, to each set of a plurality of sets of physical qubits of a quantum random access memory device, a first quantum state that is based on classical data bits that are stored in a classical memory device, wherein the applying of the first quantum state to each set of the plurality of sets of physical qubits, respectively produces an applied first quantum state; encoding, into a plurality of groups of logical qubits, the applied first quantum states to respectively produce encoded first quantum states; distilling the encoded first quantum states into a distilled quantum state; performing a quantum teleportation of the distilled quantum state into a plurality of data qubits; obtaining a classical measurement result of the quantum teleportation; determining, via classical computing resources, correction information based on the classical measurement result of the quantum teleportation; and obtaining a quantum superposition, based at least in part on a second quantum state determined using the correction information, of the classical data bits from the classical memory device.
Facts
- Company
- Amazon (Amazon Technologies, Inc.)
- Official title
- DISTILLATION-TELEPORTATION PROTOCOL FOR FAULT-TOLERANT QUANTUM RANDOM ACCESS MEMORY (QRAM)
- Publication number
- US20260299819A1
- Application number
- 19252347
- Filed
- Jun 27, 2025
- Published
- Oct 1, 2026
- Inventors
- 4
- Claims
- 20
Classified under
G06F 3/0655 Physics & computingG06F 3/0604 Physics & computingG06F 3/0673 Physics & computingG06N 10/60 Physics & computingMore from Amazon in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.