Because Qubits Are Still In Short Supply One of the challenges of the 2022 Classiq Coding Competition was to design a 14CX gate, a gate with 14 control qubits and 1 target qubit, with the least circuit depth and the lowest CNOT count. The catch, if you’ll allow me to call it that, was that you could…

ibm_oslo Grants Users Access to 7 Free Qubits Until it was retired, ibmq_16_melbourne offered then-IBMQ users access to a 14-qubit quantum computer absolutely for free. It was even upgraded to 15 qubits shortly before its retirement. But, then, all of a sudden, free accounts could only access 5-qubit devices and the 1-qubit ibmq_armonk. Three days ago, IBM Quantum reversed course a bit. Users may now access the 7-qubit ibm_oslo for free. What can you do with two more qubits? Quite a bit, quite frankly.

Based on a Classiq Coding Competition Submission One submission to the recent Classiq Coding Competition was made public early. The solution was generated using the Wolfram Quantum Framework which, at a quick glance, looked like a competitor to Classiq’s Quantum Algorithm Design platform. I thought that was going to be a really interesting predicament for Classiq should…

Because Circuit Depth Matters A recently-submitted preprint titled “Error mitigation for quantum kernel based machine learning methods on IonQ and IBM quantum computers” presents a good opportunity to write about my favorite quantum subroutine, the SWAP Test. Also known as a “distance measure,” “kernel method,” and “inner product,” the SWAP Test compares two quantum…

And Why It’s A Big Deal The Advanced Quantum Testbed (AQT) of the United States Department of Energy (DOE) has announced a native Toffoli gate. Okay, so what the heck does that mean? Let’s start from the beginning…. A Toffoli gate, aka CCNOT, aka controlled-controlled-NOT, aka AND gate, doesn’t look like much. Two little dots indicate…

A Personalized Career Guide When I shared my first book, “Dungeons & Qubits: an Adventurer’s Tale Beyond the Quantum Computing Tutorials,” on June 6, 2021, I simply uploaded the PDF to Google Drive and posted the link everywhere I could. I didn’t anticipate any degree of popularity, so I gave zero thought to analytics…

…is that I gotta have more Fire Opal…. I recently wrote an article titled, “Q-CTRL’s Fire Opal is Awesome.” The TL;DR of it is that I gave the Fire Opal team deep circuits that produce sheer noise on NISQ devices and they returned to me practical results from NISQ devices. How’d they do it? They reveal a few…

One interview. Three unique articles. I recently interviewed Prof. Seth Lloyd and Dr. Michele Reilly about their quantum computing startup, Turing. The responses would have made for one really long article, so I divided the content into three articles and submitted them to three different publications. Each article, intentionally, has unique content and a unique…