AJ Rasmusson
@ajras.bsky.social
Husband. Dad. Researcher | NRC Postdoctoral Research at NIST Ion Storage | Open Source Quantum.
July 19, 2025 at 4:32 PM
IonQ bought Oxford ionics?! What a shake up.
Oxford Ionics started a bit later in the game, but its unique laser-free gates have the lowest two-qubit gate errors of ANY platform. They bring other tech advances as well. Interested to see how this changes IonQ’s long term strategy
Oxford Ionics started a bit later in the game, but its unique laser-free gates have the lowest two-qubit gate errors of ANY platform. They bring other tech advances as well. Interested to see how this changes IonQ’s long term strategy
June 10, 2025 at 1:15 AM
IonQ bought Oxford ionics?! What a shake up.
Oxford Ionics started a bit later in the game, but its unique laser-free gates have the lowest two-qubit gate errors of ANY platform. They bring other tech advances as well. Interested to see how this changes IonQ’s long term strategy
Oxford Ionics started a bit later in the game, but its unique laser-free gates have the lowest two-qubit gate errors of ANY platform. They bring other tech advances as well. Interested to see how this changes IonQ’s long term strategy
Want an AI lab notebook.
- Smart search finds past troubleshooting notes.
- Dictation and summaries to speed up note taking and making clear conclusions day to day
- automatically connect daily entries with clear timelines of changes to hardware
- give new students reports to get up to speed
- Smart search finds past troubleshooting notes.
- Dictation and summaries to speed up note taking and making clear conclusions day to day
- automatically connect daily entries with clear timelines of changes to hardware
- give new students reports to get up to speed
May 9, 2025 at 10:37 PM
Want an AI lab notebook.
- Smart search finds past troubleshooting notes.
- Dictation and summaries to speed up note taking and making clear conclusions day to day
- automatically connect daily entries with clear timelines of changes to hardware
- give new students reports to get up to speed
- Smart search finds past troubleshooting notes.
- Dictation and summaries to speed up note taking and making clear conclusions day to day
- automatically connect daily entries with clear timelines of changes to hardware
- give new students reports to get up to speed
Would you say -10 or -5 is bigger?
April 30, 2025 at 1:21 AM
Would you say -10 or -5 is bigger?
You should have to work in a lab for 1 week before proposing a new quantum error correction code.
April 15, 2025 at 6:23 PM
You should have to work in a lab for 1 week before proposing a new quantum error correction code.
Is there a time symmetry based code? A cousin to the time crystal?
Other QEC codes are built on symmetries
Other QEC codes are built on symmetries
April 10, 2025 at 5:45 PM
Is there a time symmetry based code? A cousin to the time crystal?
Other QEC codes are built on symmetries
Other QEC codes are built on symmetries
March 14, 2025 at 2:40 AM
Did you know trapped-ion qubits have demonstrated over 1 HOUR of coherence? More than 3600 seconds!
#Quantum
www.nature.com/articles/s41...
#Quantum
www.nature.com/articles/s41...
Single ion qubit with estimated coherence time exceeding one hour - Nature Communications
Extending qubit coherence times represent one of the key challenges for quantum technologies. Here, after properly suppressing magnetic-field fluctuations, frequency instability and leakage of the mic...
www.nature.com
March 1, 2025 at 8:12 PM
Did you know trapped-ion qubits have demonstrated over 1 HOUR of coherence? More than 3600 seconds!
#Quantum
www.nature.com/articles/s41...
#Quantum
www.nature.com/articles/s41...
Instead of wading through the quantum hype of the last week,
Read up on some quantum history. The first “quantum computing relevant” (to my knowledge) 2-qubit gate
www.nature.com/articles/350...
Read up on some quantum history. The first “quantum computing relevant” (to my knowledge) 2-qubit gate
www.nature.com/articles/350...
Experimental entanglement of four particles - Nature
Nature - Experimental entanglement of four particles
www.nature.com
February 24, 2025 at 6:55 PM
Instead of wading through the quantum hype of the last week,
Read up on some quantum history. The first “quantum computing relevant” (to my knowledge) 2-qubit gate
www.nature.com/articles/350...
Read up on some quantum history. The first “quantum computing relevant” (to my knowledge) 2-qubit gate
www.nature.com/articles/350...
Though NIST is the “public sector” that hasn’t stopped anyone here from being productive.
(Nobels: 1997, 2001, 2005, 2011, 2012, …)
#Quantum
(Nobels: 1997, 2001, 2005, 2011, 2012, …)
#Quantum
February 21, 2025 at 3:21 PM
Though NIST is the “public sector” that hasn’t stopped anyone here from being productive.
(Nobels: 1997, 2001, 2005, 2011, 2012, …)
#Quantum
(Nobels: 1997, 2001, 2005, 2011, 2012, …)
#Quantum
February 12, 2025 at 3:21 PM
Slides are the artist medium of modern science
February 2, 2025 at 4:16 AM
Slides are the artist medium of modern science
January 21, 2025 at 3:10 PM
Reposted by AJ Rasmusson
Useful perspective, clearly written and well-reasoned.
arxiv.org/abs/2501.05694
arxiv.org/abs/2501.05694
Myths around quantum computation before full fault tolerance: What no-go theorems rule out and what they don't
In this perspective article, we revisit and critically evaluate prevailing viewpoints on the capabilities and limitations of near-term quantum computing and its potential transition toward fully fault...
arxiv.org
January 14, 2025 at 1:26 AM
Useful perspective, clearly written and well-reasoned.
arxiv.org/abs/2501.05694
arxiv.org/abs/2501.05694
“Experts' forecasts will always be wrong. It is simply impossible to predict with any useful degree of precision how disruptive products will be used or how large their markets will be.”
The innovator’s dilemma by Clay Christensen
The innovator’s dilemma by Clay Christensen
January 12, 2025 at 5:54 AM
“Experts' forecasts will always be wrong. It is simply impossible to predict with any useful degree of precision how disruptive products will be used or how large their markets will be.”
The innovator’s dilemma by Clay Christensen
The innovator’s dilemma by Clay Christensen
A friends asks, “what does 20 divided by 7 equal again?”
What do you say?
What do you say?
January 7, 2025 at 4:57 AM
A friends asks, “what does 20 divided by 7 equal again?”
What do you say?
What do you say?
“The idea factory: Bell labs and the great age of American innovation” has got me thinking…
A legalized monopoly (AT&T) had a critical mass of researchers which—in part—enabled amazing innovation, so…
A legalized monopoly (AT&T) had a critical mass of researchers which—in part—enabled amazing innovation, so…
January 3, 2025 at 2:47 AM
“The idea factory: Bell labs and the great age of American innovation” has got me thinking…
A legalized monopoly (AT&T) had a critical mass of researchers which—in part—enabled amazing innovation, so…
A legalized monopoly (AT&T) had a critical mass of researchers which—in part—enabled amazing innovation, so…
My grad advisor Phil Richerme is actively seeking to fill new positions in his trapped-ion lab. Couldn’t recommend this enough.
Group page:
iontrap.physics.indiana.edu/index.html
#quantum
Group page:
iontrap.physics.indiana.edu/index.html
#quantum
Richerme Lab
iontrap.physics.indiana.edu
December 31, 2024 at 4:04 AM
My grad advisor Phil Richerme is actively seeking to fill new positions in his trapped-ion lab. Couldn’t recommend this enough.
Group page:
iontrap.physics.indiana.edu/index.html
#quantum
Group page:
iontrap.physics.indiana.edu/index.html
#quantum
If I had to pick a favorite paper of the year, this would be among the top.
arxiv.org/pdf/2407.07694
Laserless single (99.99916) and two-qubit (99.97) gates. They bring a new paradigm for a platform that’s been going strong for 20+ years
(Also enjoy the integrated form factor)
#quantum
arxiv.org/pdf/2407.07694
Laserless single (99.99916) and two-qubit (99.97) gates. They bring a new paradigm for a platform that’s been going strong for 20+ years
(Also enjoy the integrated form factor)
#quantum
arxiv.org
December 21, 2024 at 3:39 AM
If I had to pick a favorite paper of the year, this would be among the top.
arxiv.org/pdf/2407.07694
Laserless single (99.99916) and two-qubit (99.97) gates. They bring a new paradigm for a platform that’s been going strong for 20+ years
(Also enjoy the integrated form factor)
#quantum
arxiv.org/pdf/2407.07694
Laserless single (99.99916) and two-qubit (99.97) gates. They bring a new paradigm for a platform that’s been going strong for 20+ years
(Also enjoy the integrated form factor)
#quantum
Already rated 5.11 stars! #StormlightArchive #Sanderson
December 6, 2024 at 2:39 PM
Already rated 5.11 stars! #StormlightArchive #Sanderson
How are we going to speed up trapped ion quantum processors? Feels like it’s time for a step function in innovation
December 3, 2024 at 1:38 AM
How are we going to speed up trapped ion quantum processors? Feels like it’s time for a step function in innovation