this post was submitted on 14 Dec 2025
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This long-term data storage will last 14 billion years (www.theregister.com)
submitted 2 days ago by kalkulat@lemmy.world to c/technology@lemmy.world
153 comments fedilink hide all child comments
 

"the medium is silica crystal, similar to optical cable, it's highly durable. It's also capacious: The technology can store up to 360 TB of data on a 5-inch glass platter."

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[–] sem@piefed.blahaj.zone 30 points 1 day ago (2 children)

How hf can you have 5D space within 3D space? This sounds like marketing bullshit.

The 5D Memory Crystal stores data by using tiny voxels – 3D pixels – in fused silica glass, etched by femtosecond laser pulses. These voxels possess "birefringence," meaning that their light refraction characteristics vary depending upon the polarization and direction of incoming light. 

That difference in light orientation and strength can be read in conjunction with the voxel's location (x, y, z coordinates), allowing data to be encoded in five dimensional space.

Oh, I get it now. It's a five-dimensional mathematical space which is given by the three physical space dimensions plus the difference in light orientation and the difference the light strength.

[–] SaveTheTuaHawk@lemmy.ca 12 points 1 day ago (2 children)

5D is the wrong term, the correct term is multiplex.

[–] Tabula_stercore@lemmy.world 6 points 1 day ago

It is the correct term if you look at it from a Hilbert space point of view. You have 5 probe options (vector 5D) that give you 5 read options (vector 5D).

[–] AppleTea@lemmy.zip 8 points 1 day ago

It's not strength, but rotation. Shoot a photon at the cube at a certain spot, you get data out of it. Hit the same spot in the cube with light that is polarized perpendicular to the first, and you get different data out of it.

Er... that's what it sounds like, anyway...