Canadian quantum tech company Nord Quantique has introduced a groundbreaking technique for quantum error correction (QEC) that promises to make quantum computers significantly smaller, faster, and up to 90% more energy-efficient.

The company’s new approach, known as the Tesseract Code, integrates bosonic qubit technology with multimode encoding, enabling it to guard against a range of common quantum errors—including bit flips, phase flips, control errors, and leakage errors—that typically affect the stability and accuracy of quantum systems.

Figure 1.Quantum Computers.

Quantum computers differ from traditional machines by using qubits instead of binary bits. These qubits can exist in multiple states simultaneously, a phenomenon known as superposition, allowing quantum systems to perform calculations exponentially faster. However, this complexity also makes them prone to errors, especially under the ultra-low temperatures required for operation.

Deploying QEC systems to manage these errors can be both costly and energy-intensive, but Nord Qu antique’s Tesseract Code addresses both challenges at once. Figure 1 shows Quantum Computers.

How the Tesseract Code Works

According to the company, their system features an autonomous error correction protocol capable of conducting mid-circuit measurements. This enables the system to detect and eliminate faulty computational runs using a process called erasure-based error suppression.

“Using physical qubits to introduce redundancy increases the size, complexity, and energy demands of the system,” said Julien Camirand-Lemyre, CEO of Nord Quantique. “With multimode encoding, we can achieve powerful error correction without relying on vast numbers of physical qubits.”

In a recent demonstration, Nord’s system successfully discarded 12.6% of flawed data across 32 error correction cycles without any measurable performance loss. The company believes that adding more modes will further enhance its error correction performance.

Transformative Efficiency Gains

The Tesseract Code allows quantum systems to be both fault-tolerant and highly efficient [1]. Nord Quantique estimates its 1,000-logical-qubit quantum computer will occupy only 20 square meters—small enough to fit within a modern data center.

In terms of performance and energy efficiency, the company claims its system can run the RSA-830 cryptographic algorithm at 1 MHz speed in just one hour using only 120 kWh. In contrast, a traditional high-performance computing system would require nine days and around 280,000 kWh to complete the same task.

Additionally, Nord’s innovation allows for a 1:1 ratio of physical to logical qubits, streamlining quantum architecture. The company plans to deliver a 1,000-qubit system built on this principle by 2029.

Reference:

1. https://interestingengineering.com/innovation/quantum-computers-made-90-more-efficient

Cite this article:

Keerthana S (2025), Breakthrough: Quantum Computers Become 90% More Energy-Efficient, Compact, And Faster, AnaTechMaz, pp,247