Circuit Knitting: Faking a Bigger Quantum Computer With Classical Glue
Every quantum processor has a hard ceiling: the number of qubits etched onto its chip. If your algorithm needs 40 qubits and your machine has 30, you...
The SPAC Gamble: How Quantum Companies Went Public Before the Hardware Did
Most deep-tech companies wait until they have a product before they ring the opening bell. Quantum computing took the opposite route. Starting around...
Renting a Qubit: How the Quantum Cloud Actually Works
The strangest thing about quantum computing is how ordinary the front door looks. You do not need a cleanroom, a physics PhD, or a refrigerator colder...
The Topological Bet: Microsoft's Long Shot at a Sturdier Qubit
Nearly every quantum computer in operation today shares a frustrating trait: the information in its qubits is fragile. A stray vibration, a wandering...
The Benchmark Wars: Why Quantum Computers Can't Agree on a Yardstick
Ask a quantum computing company how good its machine is and you will get a number. The trouble is that no two companies quote the same number. One bra...
The Crosstalk Curse: When Poking One Qubit Rattles Its Neighbors
A quantum processor is a crowded neighborhood. To perform useful computation, qubits need to sit close enough to interact, exchanging the entanglement...
The Quiet Amplifier: How a Qubit's Whisper Survives the Trip Out
When a superconducting quantum computer measures a qubit, it does not read a bright, obvious signal. It reads a faint microwave tone reflected off a t...
Dynamical Decoupling: The Pulse Trick That Keeps a Waiting Qubit Alive
Picture a quantum circuit as a factory floor where some machines are hammering away and others are standing idle, waiting for a part to arrive. In a c...
The Mitigation Gambit: Getting Useful Answers From Noisy Qubits
Quantum error correction gets the headlines, but it is not what most quantum computers actually use today. Building a single fault-tolerant logical qu...
The SWAP Tax: When Qubits Can't Talk to Each Other
Picture a quantum processor as a small town where every qubit is a house, and the roads between houses are the only paths along which information can...
The Loading Dock: Why Getting Data Into a Quantum Computer Is So Hard
Talk about quantum computing usually fixates on the answer coming out of the machine. Far less attention goes to the awkward question at the start of...
The Wiring Wall: Why a Million Qubits Can't Each Have Their Own Cable
Open the door of a dilution refrigerator and you see the part nobody puts on the brochure: a dense forest of coaxial cables snaking down through gold-...